AB |
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noun
- A blood type of the ABO system that has a both blood antigens and may receive all blood types, and donate to AB.
abbreviation
- Alberta (Canadian province).
- able-bodied seaman.
- also.
- antiballistic.
- Bachelor of Arts.
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abiological |
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adjective
- Pertaining to inanimate things.
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ABS |
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initialism- Anti-lock braking system
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absorb |
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verb
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(transitive) To include so that it no longer has separate existence; to swallow up; to engulf; to overwhelm; to cause to disappear as if by swallowing up; to use up; to incorporate; to assimilate.
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Dark oblivion soon absorbs them all. - Cowper
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The large cities the wealth and fashion. - W. Irving
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(transitive) To suck up; to drink in; to imbibe; as a sponge or as the lacteals of the body. - Bacon
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(transitive) To learn
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(transitive) To engross or engage wholly; to occupy fully; as, absorbed in study or in the pursuit of wealth.
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(transitive) To consume completely.
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(transitive) To endure.
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(transitive) (physics) To take up by chemical or physical action.
- Heat, light, and electricity are absorbed in the substances into which they pass.
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(transitive) (finance) To assume or pay for as part of a commercial transaction.
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absorption |
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noun
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The act or process of absorbing or sucking in anything, or of being absorbed and made to disappear; as, the absorption of bodies in a whirlpool, the absorption of a smaller tribe into a larger.
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(context, chemistry, physics) An imbibing or reception by molecular or chemical action; as, the absorption of light, heat, electricity, etc.
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(physiology) In living organisms, the process by which the materials of growth and nutrition are absorbed and conveyed to the tissues and organs.
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Entire engrossment or occupation of the mind; as, absorption in some employment.
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AC |
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initialism
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(electrical) alternating current, Alternating Current
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(electrical): often used to indicate an alternating potential rather than a current, as in 110V AC.
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Air Conditioning, usually: A/C
- as charged, as in: guilty as charged, usually: a/c
- Area Code
- all clear, as in button on electronic calculator
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(internet slang) audible chuckle
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(set theory) axiom of choice
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accelerant |
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noun
- a substance that accelerates the development of a fire; especially some petroleum product used to spread an act of arson
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accelerator |
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nounOften used adjectivally
- One who, or that which, accelerates.
- A device for causing acceleration.
- A substance which speeds up chemical reactions.
- accelerator pedal.
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acceptor |
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noun
- One who accepts.
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(context, In law and commerce) one who accepts a draft or a bill of exchange; a drawee after he has accepted.
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(chemistry) an atom or molecule which can accept an electron to form a chemical bond.
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(physics) a chemical acceptor atom forming a positive hole in a semiconductor.
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acetal |
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noun
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(organic chemistry) Any diether of a geminal diol, R2C(OR')2 (where R' does not = H).
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acetaldehyde |
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noun
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(organic compound) An organic compound (CH3CHO). Sometimes called ethanal or acetic aldehyde. See aldehyde.
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acetamide |
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noun
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(organic compound) The amide of acetic acid, CH3CONH2.
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acetate |
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noun
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(organic chemistry) Any salt or ester of acetic acid.
- cellulose acetate
- A transparent sheet used for overlays.
- A disc of aluminium covered in a wax used to make demonstration copies of a phonograph record.
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acetic |
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adjective
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(organic chemistry) Of a pertaining to vinegar; producing vinegar; producing vinegar; as, fermentation.
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(organic chemistry) Pertaining to, containing, or derived from, acetyl, as ether, acetic acid. The latter is the acid to which the sour taste of vinegar is due.
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acetic acid |
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noun
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(organic compound) A clear colourless organic acid, CH3COOH, formed by the oxidation of ethanol; it is used as a solvent and has very many industrial applications; it is the major acidic component of vinegar.
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acetimeter |
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noun
- An instrument for estimating the amount of acetic acid in vinegar or in any liquid containing acetic acid.
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acetin |
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noun-
(Chemistry): A combination of acetic acid with glycerin - Brande & C
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acetometer |
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noun
- Variant of Acetimeter - Brande & C
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acetone |
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noun
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(organic compound) A colourless, volatile, flammable liquid ketone, (CH3)2CO, used as a solvent.
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acetonitrile |
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noun-
(organic compound) The simplest organic cyanide or nitrile, CH3CN.
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acetyl |
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noun-
(organic chemistry) The univalent radical CH3CO- derived from acetic acid.
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acetylene |
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noun
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(organic chemistry) Any organic compound having one or more carbon-carbon triple bond; an alkyne.
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(organic compound) ethyne, Ethyne; the simplest alkyne, a hydrocarbon of formula HC≡CH. It is a colourless gas, with a peculiar, unpleasant odour, formerly used as an illuminating gas, but now used in welding or metallurgy.
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acetylide |
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noun-
(organic chemistry) Any organic compound derived from acetylene or a terminal acetylene by replacing a hydrogen atom with a metal.
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ACID |
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initialism
- analysis console for intrusion databases
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(databases) Atomicity, Consistency, Isolation, and Durability (see Wikipedia:ACID, Wikipedia article on this topic)
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acid anhydride |
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noun
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(organic chemistry) A class of organic compounds having two acyl groups bonded to the same oxygen atom. They react with water to give carboxylic acids.
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acidic |
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adjective
- Being sour or having the strength to neutralize alkalis, or turning a blue litmus paper red.
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(mineralogy) Containing a high percentage of silica; -- opposed to basic.
- Of or relating to acid; having the character of an acid, as an acidic solution.
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acidimetry |
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noun
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(chemistry) The measurement of the strength of acids, especially by a chemical process based on the law of chemical combinations, or the fact that, to produce a complete reaction, a certain definite weight of reagent is required.
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acidity |
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noun (acidities)
- The quality or state of being acid
- The quality of sour; sourness; tartness; sharpness to the taste, as in the of lemon juice.
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Med. Excessive acid quality, as in gastric secretions.
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acidulate |
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verb (acidulat, ing)
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(transitive) To make something slightly, or moderately acid; to acidify
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(transitive) To make sour in a moderate degree; to sour somewhat
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acidulent |
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adjective
- Having an acid quality; sour; acidulous.
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Quotations
- With anxious, face - Thomas Carlyle
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acrylamide |
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noun
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(organic compound) The amide of acrylic acid, CH2=CH.CONH2; used in the manufacture of polyacrylamides.
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acrylic |
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noun
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(organic chemistry) An acrylic resin.
- A paint containing an acrylic resin; a painting executed using such a paint.
adjective
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(organic chemistry) Derived from acrylic acid or acrylonitrile.
- Containing an acrylic resin.
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acrylic acid |
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noun
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(organic compound) A colourless liquid unsaturated organic acid, CH2CHCOOH; used as a monomer in the production of acrylic resins; forms acrylate esters by combination with alcohols.
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acrylic fiber |
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noun- synthetic fibers made from a polymer.
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acrylic resin |
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noun
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(organic chemistry) Any of many thermoplastic or thermosetting polymers or copolymers of acrylic acid, methacrylic acid, esters of these acids, or acrylonitrile; used in paint and many plastics.
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acrylonitrile |
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noun
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(organic compound) A toxic colourless liquid organic compound, CH2=CH.CN, synthesized from propylene and ammonia; used as a monomer in the production of acrylic resins and synthetic rubber.
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actinide |
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noun-
(chemistry) any of the 14 radioactive elements of the periodic table that are positioned under the lanthanides to which they have similar chemistry
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actinism |
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noun (infl, en, noun)
- That property of electromagnetic radiation that leads to the production of photochemical effects
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actinium |
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noun
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a radioactive, metallic chemical element (symbol: Ac) with an atomic number of 89; found in uranium ores
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activate |
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verb (activat, ing)
- Put into action
- Put to work
- Turn on
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activated carbon |
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noun
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(chemistry) A very absorbent form of finely powdered carbon; used in purifying gases, and as an antidote for many poisons.
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activity |
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noun (WikiSaurus?-link, activity)
(activit, ies)
- The state or quality of being active; nimbleness; agility; vigorous action or operation; energy; active force; as, an increasing variety of human activities.
Pit row was abuzz with activity.
- something done as an action or a movement
The activity for the morning was a walk to the store.
- something done for pleasure or entertainment, especially one involving movement or an excursion.
Quilting can be a fun activity.
- Use (of internet, playstation, bank account etc.)
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acyclic |
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adjective
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(chemistry) not cyclic; having an open chain structure
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(graph theory) not cyclic
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acyl |
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noun
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(organic chemistry) A class of organic radicals, RCO-, formed by the removal of a hydroxyl group from a carboxylic acid.
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acyloin |
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noun
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(organic chemistry) Any Î~+mn~-hydroxy ketone.
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adamantane |
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noun-
(organic compound) A polycyclic hydrocarbon, C10H16, having a cagelike structure similar to a portion of the diamond lattice.
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addition |
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noun
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(uncountable) The act of adding anything.
The addition of five more items to the agenda will make the meeting unbearably long.
- Anything that is added.
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(arithmetic) (uncountable) The process of adding.
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addition reaction |
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noun
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(chemistry) a reaction in which radicals are added to both sides of a double bond, double or triple bond
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adduct |
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noun
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(chemistry) A compound produced by the mixing of two or more chemicals.
verb
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(transitive, physiology) To draw towards a common center or a middle line. - Thomas Huxley
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adipic acid |
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noun-
(organic compound) A white crystalline di-carboxylic acid, C4H8(COOH)2; it has many industrial applications, and when condensed with hexamethylene diamine it produces nylon.
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adsorbate |
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noun
- a substance which has been adsorbed
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aerogel |
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noun
- A solid-state substance similar to gel where the liquid component is replaced with gas.
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aerosol |
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noun
- A gaseous or airborne cloud of particulate matter, either as a solid, liquid, or gas, which forces another substance out of a spray can.
An was used to force the flea powder out of the can.
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(physical chemistry) A colloidal system in which the dispersed phase is composed of either solid or liquid particles and in which the dispersal medium is some gas, usually air.
adjective
- In a gaseous or airborne cloud of particulate matter, either solid, liquid, or gas
- The paint came as a can of fast-drying spray.
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affinity |
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noun (affinities)
- A family relationship through marriage of a relative, as opposed to consanguinity. (e.g. sister-in-law).
- A kinsman or kinswoman of such relationship. Affinal kinsman or kinswoman.
- Any romantic relationship.
- Any passionate love for something.
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(chemistry) An attractive force between atoms, or groups of atoms, that contributes towards their forming bonds
- The attraction between an antibody and an antigen
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AG |
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initialism
- Attorney General
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agarose |
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noun
- a polymeric cross-linked polysaccharide extracted from the seaweed agar; used to make gels that are used in electrophoresis
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agent |
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noun
- One who exerts power, or has the power to act; an actor.
Heaven made us agents, free to good or ill. --Dryden.
- One who acts for, or in the place of, another, by authority from him; one intrusted with the business of another; a substitute; a deputy; a factor.
- An active power or cause; that which has the power to produce an effect; as, a physical, chemical, or medicinal agent; as, heat is a powerful agent.
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(computing) In the client-server model, the part of the system that performs information preparation and exchange on behalf of a client or server. Especially in the phrase “intelligent agent” it implies some kind of automatic process which can communicate with other agents to perform some collective task on behalf of one or more humans.
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alabamine |
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noun
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(context, element, obsolete) Former name for chemical element astatine.
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alanyl |
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noun
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(organic compound) The univalent acyl radical, CH3CH(NH2)CO-, derived from the amino acid alanine.
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alcohol |
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noun
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(uncountable) An intoxicating beverage made by the fermentation of sugar or sugar-containing material.
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(context, organic chemistry, countable) Any of a class of organic compounds (such as ethanol) containing a hydroxyl functional group(-OH).
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alcoholate |
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noun
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(context, obsolete, chemistry) A crystalline salt containing alcohol in place of water of crystallization.
- An alcoholic extract of plant material; a tincture.
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(organic chemistry) An alkoxide.
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alcoholometer |
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noun
- A specialized form of hydrometer used to measure the amount of alcohol in a liquid (such as beer)
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alcoholysis |
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noun-
(chemistry) solvolysis using an alcohol
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aldehyde |
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noun
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(organic chemistry) Any of a large class of reactive organic compounds (R·CHO) having a carbonyl functional group attached to one hydrocarbon radical and a hydrogen atom.
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aldose |
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noun
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(context, organic chemistry, carbohydrate) Any of a class of monosaccharides having an aldehyde or hemiacetal functional group.
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alginic acid |
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noun- a gum (a carboxylated polysaccharide), extracted from certain seaweeds, used as a food additive
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alicyclic |
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adjective-
(organic chemistry) Of a class of organic compounds having both aliphatic (chain) and cyclic (ring) structure.
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aliphatic |
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adjective
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(organic chemistry) Of a class of organic compounds in which the carbon atoms are arranged in an open chain.
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alkali |
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noun (alkal, ies, pl2=alkalis)
- Soda ash; caustic soda, caustic potash, etc.
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(Chemistry) One of a class of caustic bases, such as soda, potash, ammonia, and lithia, whose distinguishing peculiarities are solubility in alcohol and water, uniting with oils and fats to form soap, neutralizing and forming salts with acids, turning to brown several vegetable yellows, and changing reddened litmus to blue.
- (Western United States) Soluble mineral matter, other than common salt, contained in soils of natural waters.
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alkalimeter |
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noun
- A device used to measure alkalinity
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alkaline |
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adjective
- Of, or relating to an alkali.
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(chemistry) Having a pH greater than 7
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alkalinity |
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noun (alkalinities)
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(chemistry) The state of being, or the degree to which a thing is, alkaline.
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alkalize |
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verb (alkaliz, ing)
- To cause to become more basic and less acidic.
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alkane |
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noun
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(organic chemistry) Any of saturated hydrocarbons including methane, ethane and compounds with long carbon chain known as paraffins etc., having a chemical formula of the form CnH2n+2.
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alkene |
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noun-
(organic chemistry) An unsaturated, aliphatic hydrocarbon with one or more carbon-carbon double bonds.
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alkoxide |
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