Glossary · Nouns · N
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TermTypeDefinitionClassificationsUpdated
Nipa PalmnounMWEany creeping semiaquatic feather palm of the genus Nipa found in mangrove swamps and tidal estuariesverified
Niqaabinounan observant Muslim woman who covers her face and hands when in public or in the presence of any man outside her immediate familyverified
Niqabnouna veil covering all of the face except the eyes that is worn by observant Muslim womenverified
Nitnouna luminance unit equal to 1 candle per square meter measured perpendicular to the rays from the sourceverified
Nitric AcidnounMWEacid used especially in the production of fertilizers and explosives and rocket fuelsverified
Nitridenouna compound containing nitrogen and a more electropositive element (such as phosphorus or a metal)verified
Nitrificationnounthe oxidation of ammonium compounds in dead organic material into nitrates and nitrites by soil bacteria (making nitrogen available to plants)verified
Nitritenounthe radical -NO2 or any compound containing it (such as a salt or ester of nitrous acid)verified
Nitrobenzenenouna poisonous oily water-soluble liquid used as a solvent and in the manufacture of anilineverified
Nitrochloroformnouna heavy colorless insoluble liquid compound that causes tears and vomitingverified
Nitrofurantoinnounderivative of nitrofuran used as an antibacterial medicine (trade name Macrodantin) effective against a broad range of Gram-positive and Gram-negative bacteriaverified
Nitrogennouna common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gasverified
Nitrogen BalancenounMWEthe balance between the amount of nitrogen taken in (to the soil or the body) and the amount given off (lost or excreted)verified
Nitrogen FixationnounMWEthe assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacteriaverified
Nitrogen NarcosisnounMWEconfused or stuporous state caused by high levels of dissolved nitrogen in the bloodverified
Nitrogen OxidenounMWEany of several oxides of nitrogen formed by the action of nitric acid on oxidizable materialsverified
Nitrogen TrichloridenounMWEa yellow pungent volatile oil (trade name Agene) formerly used for bleaching and aging flourverified
Nitrogenasenounan enzyme of nitrogen-fixing microorganisms that catalyzes the conversion of nitrogen to ammoniaverified
Nitroglycerinnouna heavy yellow poisonous oily explosive liquid obtained by nitrating glycerolverified
Nitroglycerinenouna heavy yellow poisonous oily explosive liquid obtained by nitrating glycerolverified
Nitrohydrochloric AcidnounMWEa yellow fuming corrosive mixture of nitric and hydrochloric acid that dissolves metals (including gold)verified
Nitta TreenounMWEany of several Old World tropical trees of the genus Parkia having heads of red or yellow flowers followed by pods usually containing edible seeds and pulpverified
Nitty-Grittynounthe choicest or most essential or most vital part of some idea or experienceverified
Nitweednounannual wiry-stemmed North American weed with minute scalelike leaves and small yellow flowersverified
No Fault Automobile InsurancenounMWEa system of automobile insurance where a party who is injured in an automobile accident recovers damages up to a specific amount against his own insurance company regardless of who was responsible for the accidentverified
No Fault InsurancenounMWEa system of automobile insurance where a party who is injured in an automobile accident recovers damages up to a specific amount against his own insurance company regardless of who was responsible for the accidentverified
no longer needed for legal, regulatory, or business reasonnounMWESomething that is not needed anymore for business, regulatory, or legal reasons.RequirementRegulated
No Man's LandnounMWEthe ambiguous region between two categories or states or conditions (usually containing some features of both)verified
No-Go AreanounMWEan area that is dangerous or impossible to enter or to which entry is forbiddenverified
No-Lone ZonenounMWEArea, room, or space that, when staffed, must be occupied by two or more appropriately cleared individuals who remain within sight of each other. See Two-Person Integrity.ControlRegulatedCUI
No-Par StocknounMWEstock with no par value specified in the corporate charter or on the stock certificateverified
No-Par-Value StocknounMWEstock with no par value specified in the corporate charter or on the stock certificateverified
No-Trumpnouna version of contract bridge in which no suit is designated as trump for the duration of the handverified
Nobeliumnouna radioactive transuranic element synthesized by bombarding curium with carbon ionsverified
Nobilitynounthe quality of elevation of mind and exaltation of character or ideals or conductverified
Noble GasnounMWEany of the chemically inert gaseous elements of the helium group in the periodic tableverified
Noblenessnounthe quality of elevation of mind and exaltation of character or ideals or conductverified
Noblesse ObligenounMWEthe obligation of those of high rank to be honorable and generous (often used ironically)verified