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Glossary of Chemistry Terms
beginning with letter N
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N Tweet Definition of N Like Definition of N on Facebook
noun
  1. The fourteenth letter of the Appendix:Roman script, English alphabet, preceded by M and followed by O.
abbreviation
  1. (military) Navy
NA Tweet Definition of NA Like Definition of NA on Facebook
initialism
  1. Narcotics Anonymous
naphtha Tweet Definition of naphtha Like Definition of naphtha on Facebook
noun
  1. (dated) Naturally-occuring liquid petroleum.
  2. Any of a wide variety of aliphatic or aromatic liquid hydrocarbon mixtures distilled from petroleum or coal tar, especially as used in solvents or petrol.
    • 1995, Philip Pullman, Northern Lights:
    • : The Common Room and the Library were lit by anbaric light, but the Scholars preferred the older, softer lamps in the Retiring Room.
naphthalene Tweet Definition of naphthalene Like Definition of naphthalene on Facebook
noun
  1. A white crystalline hydrocarbon manufactured from coal tar; used in mothballs.
  1. (organic compound) An aromatic bicyclic hydrocarbon, C10H8; an acene containing two fused benzene rings.
naphthene Tweet Definition of naphthene Like Definition of naphthene on Facebook
noun
  1. (chemistry) any cycloalkane (or alkyl derivative)
nascent Tweet Definition of nascent Like Definition of nascent on Facebook
adjective
  1. emerging; just coming into existence
India has a space industry.
  1. (chemistry) of the state of an element at the time it is generated from some compound
NB Tweet Definition of NB Like Definition of NB on Facebook
initialismorN.B.
  1. Nota bene; used in written English to introduce something to be noted.
NB: Do not write below this line.
  1. New Brunswick (Canadian province)
  2. North Bound
ND Tweet Definition of ND Like Definition of ND on Facebook
abbreviation
  1. North Dakota, a state of the United States of America.
  2. negligent, Negligent discharge, Discharge. Military, accidental firing of a weapon
NE Tweet Definition of NE Like Definition of NE on Facebook
abbreviation
  1. Nebraska, a state of the United States of America.
  2. northeast, Northeast, a cardinal point of the compass.
  3. not, Not evaluated.
  4. norepinephrine, Norepinephrine.
negative Tweet Definition of negative Like Definition of negative on Facebook
noun
  1. (photography) an image in which dark areas represent light ones, and the converse
  2. (grammar) a word that indicates negation
  3. (mathematics) a negative quantity
  4. (weightlifting): A rep performed with weight in which the muscle begins at maximum contraction and is slowly extended; a movement performed using only the eccentric phase of muscle movement.
adjective
  1. not positive or neutral
  2. inherently damaging; undesirable
  3. electrical charge of an electron and related particles
neodymium Tweet Definition of neodymium Like Definition of neodymium on Facebook
noun
  1. a metallic chemical element (symbol Nd) with an atomic number of 60.
neon Tweet Definition of neon Like Definition of neon on Facebook
noun
  1. The chemical element (symbol Ne) with an atomic number of 10.
  2. neon signs, collectively.
    1. a neon tetra fish
neon lamp Tweet Definition of neon lamp Like Definition of neon lamp on Facebook
noun
  1. a small gas discharge lamp containing neon gas, sometimes with other noble gases to add colour
neoprene Tweet Definition of neoprene Like Definition of neoprene on Facebook
noun
  1. a synthetic rubber, a polymer of chloroprene, commonly used in wetsuits etc
nephelometer Tweet Definition of nephelometer Like Definition of nephelometer on Facebook
noun
  1. (analytical chemistry) An instrument for measuring various aspects of the suspended particles in a fluid; especially in a colloid.
neutral Tweet Definition of neutral Like Definition of neutral on Facebook
noun
  1. A nonaligned state, or a member of such a state
  2. A person who takes no side in a dispute
  3. A neutral hue
  4. The position of a set of gears in which power cannot be transmitted to the drive mechanism
  5. An electrical terminal that is not electrified
adjective
  1. Not taking sides in a conflict such as war; nonaligned.
  2. Favouring neither the supporting nor opposing viewpoint of a topic of debate; unbiased.
  3. (grammar) Neither positive nor negative.
  4. Neither beneficial nor harmful.
  5. Having no sex; neuter.
  6. Having no obvious colour; gray
  1. (physics) Neither positive nor negative; possessing no charge or equivalent positive and negative charge such that there is no imbalance.
  2. (chemistry) Having a pH of 7, neither acidic nor alkaline.
neutralize Tweet Definition of neutralize Like Definition of neutralize on Facebook
verb (neutraliz, ing)
  1. To make inactive or ineffective.
    The antidote neutralized the toxin.
nickel Tweet Definition of nickel Like Definition of nickel on Facebook
noun
  1. (uncountable) A silvery elemental metal with an atomic number of 28 and symbol Ni.
  2. (US, Canada, countable) A coin worth 5 cents.
  3. (US slang; sometimes the nickel or the hot nickel) Interstate 5, a highway that runs along the west coast of the United States.
  4. (slang) A playing card with the rank of five
nickelic Tweet Definition of nickelic Like Definition of nickelic on Facebook
adjective
  1. Containing nickel.
  2. (chemistry) Containing trivalent nickel.
nickelous Tweet Definition of nickelous Like Definition of nickelous on Facebook
adjective
  1. Containing nickel.
  2. (chemistry) Containing bivalent nickel.
nicotine Tweet Definition of nicotine Like Definition of nicotine on Facebook
noun
  1. (chemistry) An alkaloid (C10H14N2), commonly occurring in the tobacco plant. In small doses it is a habit-forming stimulant, in larger doses it is toxic and is often used in insecticides. It is possibly a carcinogen.
niter Tweet Definition of niter Like Definition of niter on Facebook
noun (US spelling)
  1. (chemistry) A mineral form of potassium nitrate used in making gunpowder.
nitric oxide Tweet Definition of nitric oxide Like Definition of nitric oxide on Facebook
noun
  1. (chemistry) the binary compound of nitrogen and oxygen NO; an unstable compound which rapidly oxidizes in the presence of air
nitrogen dioxide Tweet Definition of nitrogen dioxide Like Definition of nitrogen dioxide on Facebook
noun
  1. (chemistry) the binary compound NO2, a brownish gas that is a poisonous air pollutant; it exists in equilibrium with dinitrogen tetroxide
nitrogen tetroxide Tweet Definition of nitrogen tetroxide Like Definition of nitrogen tetroxide on Facebook
noun
  1. (chemistry) dinitrogen tetroxide
nitrostarch Tweet Definition of nitrostarch Like Definition of nitrostarch on Facebook
noun
  1. an explosive powder prepared by the nitration of starch; used for demolition
noble Tweet Definition of noble Like Definition of noble on Facebook
noun
  1. An aristocrat; one of aristocratic blood
adjective
  1. Having honorable qualities; having moral eminence and freedom from anything petty, mean or dubious in conduct and character
He made a effort.
noble gas Tweet Definition of noble gas Like Definition of noble gas on Facebook
noun
  1. (chemistry) Any of the elements of group 0 of the periodic table, being monatomic and (with very limited exceptions) inert.
nonmetal Tweet Definition of nonmetal Like Definition of nonmetal on Facebook
noun
  1. (chemistry) an element, such as phosphorus or chlorine, that does not have the chemical or physical properties of a metal
nonmetallic Tweet Definition of nonmetallic Like Definition of nonmetallic on Facebook
adjective
  1. (chemistry) of, relating to, or having the properties of a nonmetal
    1. not metallic
nonpolar Tweet Definition of nonpolar Like Definition of nonpolar on Facebook
adjective
  1. (physics) not containing a dipole
  2. (chemistry) not ionic; not dissociating into ions when dissolved in water etc
NT Tweet Definition of NT Like Definition of NT on Facebook
initialism
  1. (stock symbol) w:Nortel, Nortel
  2. Northern Territory (of Australia)
  3. Northwest Territories (Canada)
  4. New Testament (Bible)
  5. New Territories (of Hong Kong)
  6. neurotensin
nucleophilic Tweet Definition of nucleophilic Like Definition of nucleophilic on Facebook
adjectivenucleoophilic
  1. (chemistry) of, or relating to an nucleophile
nucleus Tweet Definition of nucleus Like Definition of nucleus on Facebook
noun (pl=nuclei, pl2=nucleuses)
  1. (context, chemistry, physics) The massive, positively charged central part of an atom made up of protons and neutrons.
  2. (cytology) A large organelle found in cells which contains genetic material.
  3. The central part (of something), round which others are collected.
  4. An initial part that will receive additions.
This collection will form the of a new library.
  1. (neuroanatomy) A cluster of many neuronal bodies where synapsing occurs.

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