| I |
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noun
- The capitalisation, capitalised ninth letter of the Appendix:Roman script, English alphabet, preceded by H and followed by J.
pronoun (desc=personal pronoun, objective, me, possessive, my, possessive noun, mine, reflexive, myself)
- The speaker or writer, referred to as the grammatical subject of a sentence.
, + Inflection
, -
, object , , me
, -
, reflexive , , myself
, -
, possessive , , mine or my
=
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| ignite |
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verb (ignit, ing)
- to set fire (to something), to light (something)
- to spark off (something), to enthuse
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| IL |
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abbreviation
- Illinois, a state of the United States of America.
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| imide |
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noun - (chemistry) a form of amide in which the nitrogen atom is attached to two carbonyl groups - R1CONHCOR2
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| imidogen |
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noun
- (organic chemistry) A nitrene.
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| imine |
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noun
- (organic chemistry) Any of a class of organic nitrogen compounds having the general formula R2C=NR; they are tautomeric with enamines.
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| imino |
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noun - (chemistry) The divalent radical =NH
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| indamine |
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noun - (chemistry) any of a range of organic bases related to phenazine; they form indigo-coloured salts used in making dyes
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| india rubber |
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noun India rubber
- The latex obtained from certain trees, especially those of the genera Hevea and Ficus
- The rubber made from this latex
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| indium |
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noun
- a metallic chemical element (symbol In) with an atomic number of 49.
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| indole |
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noun
- (chemistry) An organic compound, C8H7N, found in coal tar, and produced in the gut by the bacterial decomposition of tryptophan; it is an aromatic bicyclic heterocycle having a benzene ring fused with a pyrrole ring; indole and its derivatives occur widely in nature and have many industrial applications.
- (chemistry) Any of the derivatives of indole1.
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| inert |
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adjective
- unable to move or act
- sluggish or lethargic
- in chemistry, not readily reacting with other elements or compounds
- having no therapeutic action
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| inert gas |
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noun
- (chemistry) A gas which does not undergo chemical reactions.
- (context, chemistry, specifically) A noble gas.
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| inhibit |
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verb
- to hinder; to restrain
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| inhibition |
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noun
- the act of inhibiting.
- the state of being inhibited.
- something that inhibits.
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| inhibitor |
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noun
- (chemistry) Any substance capable of stopping or slowing a specific chemical reaction.
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| inorganic |
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adjective
- (chemistry) relating to a compound that does not contain carbon
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| inorganic chemistry |
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noun
- (chemistry) The chemistry of the elements (including carbon), and those compounds that do not contain carbon.
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| intermediate |
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noun
- anything in an intermediate position
- an intermediary
- (chemistry) any substance formed as part of a series of chemical reactions that is not the end-product
adjective
- occurring between two extremes, or in the middle of a range
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| inulin |
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noun - (chemistry) a polysaccharide found in the roots and tubers of certain plants, especially the Compositae; it is mostly a polymer of fructose
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| invert |
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noun
- (archaic) A homosexual man.
- (context, architecture) An upside-down arch (as in a sewer.)
verb
- To turn upside down or inside out.
- (music) To move the root note of a chord up or down an octave, resulting in a change in pitch.
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| invert sugar |
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noun - An equal mixture of glucose and fructose formed by the enzymatic hydrolysis of sucrose; it is found in honey and some fruits, and also produced industrially
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| iodate |
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noun
- (chemistry) The anion IO3-; Any salt of iodic acid.
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| iodic |
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adjective - (chemistry) of, or relating to iodine or its compounds, especially those in which it has a valency of five
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| iodide |
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noun - (chemistry) A binary compound of iodine and another element or radical.
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| ionic bond |
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noun
- (chemistry) A type of chemical bond where two atoms or molecules are connected to each other by electrostatic attraction.
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| ionomer |
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noun - (chemistry) a polymer, or a biological macromolecule (such as a protein) in which a small but significant proportion of the constituent monomers have ionic groups
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| iridic |
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adjective - (chemistry) containing tetravalent iridium
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| iridium |
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noun
- A metallic chemical element (symbol Ir) with an atomic number of 77.
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| iron |
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noun
- (context, uncountable) A metallic chemical element having atomic number 26, and symbol Fe.
- (context, countable) A tool or appliance made of metal, which is heated and then used to transfer heat to something else; most often a thick piece of metal fitted with a handle and having a flat, roughly triangular bottom, which is heated and used to press wrinkles from clothing, and now usually containing an electrical heating apparatus.
- (context, usually plural, irons) Shackles.
- (slang) A handgun.
- (context, uncountable) A dark shade of the colour/color silver.
- (context, Cockney rhyming slang, shortened from iron hoof, rhyming with poof; countable, offensive, ) A male homosexual.
verb
- (transitive) To pass an iron over (clothing or some other item made of cloth) in order to remove creases.
adjective (more iron, most iron)
- {not comparable} Made of the metal iron.
- (context, figuratively) Strong (as of will), inflexible.
- She had an iron will.
- He held on with an iron grip.
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| iron vitriol |
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noun - (obsolete),(chemistry) iron(II) sulfate
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| isoamyl |
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noun - (chemistry) the organic radical derived from isoamyl alcohol; 3-methyl butyl
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| isocyanate |
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noun - (chemistry) the univalent radical -N=C=O (tautomeric with cyanate), and any of its hydrocarbyl derivatives R-N=C=O
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| isocyanide |
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noun - (chemistry) the isomer HN+C- of hydrocyanic acid HCN
- (chemistry) any of its hydrocarbyl derivatives RNC
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| isocyclic |
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adjective - (chemistry) homocyclic
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| isoelectric point |
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noun (abbreviated as pI)
- (physics),(chemistry) the pH of a colloidal suspension or of an ampholyte at which the solute does not move in an electrophoretic field
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| isomer |
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noun
- (chemistry) Any of two or more compounds with the same molecular formula but with different structure.
- (physics) Any of two or more nuclei with the same mass number and atomic number but with different radioactive properties.
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| isomerism |
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noun - (chemistry) the phenomenon of the existence of isomers - the existence of different substances with the same molecular formulae
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| isomerize |
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verb - (chemistry) to convert a compound into a different isomeric form
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| isooctane |
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noun - (chemistry) any isomer of n-octane; especially 2,2,4-trimethylpentane, used as a reference in the determination of the octane number of fuel
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| isoprene |
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noun - (organic compound) An unsaturated hydrocarbon, C5H8, that is readily polymerized; natural rubber (caoutchouc) is cis-1,4-polyisoprene, and trans-1,4-polyisoprene is present in gutta-percha and balata; it is the structural basis for the terpenes.
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| isoprenoid |
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noun - (organic chemistry) Any compound formally derived from one or more isoprene unit.
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| isopropyl |
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noun - (chemistry) the univalent organic radical (CH3)2CH-
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| isothiocyanate |
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noun - (chemistry) any salt or ester of the hypothetical isothiocyanic acid; or the -NCS radical or the NCS-1 anion; isomeric with thiocyanate
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| isotonic |
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adjective
- (context, of two solutions) having the same osmotic pressure
- (context, of a medical solution) Having the same concentration of solutes as human blood.
- Use an saline solution in your neti pot to prevent irritation of your nasal passages.
- (context, of two muscles) having equal tension
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| itaconic acid |
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noun - (chemistry) one of the isomeric dicarboxylic acids produced by the distillation of citric acid, or as metabolites by microorganisms, CH2=C(CO2H)-CH2CO2H
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