Dictionary

All Word
natural fiber Noun fiber derived from plants or animals
natural fibre Noun fiber derived from plants or animals
natural gas Noun a fossil fuel in the gaseous state
naval brass Noun alpha-beta brass containing tin
neat's-foot oil Noun a pale yellow oil made from the feet and legs of cattle
nerve gas Noun a toxic gas that is inhaled or absorbed through the skin and has harmful effects on the nervous and respiratory system
nerve agent Noun a toxic gas that is inhaled or absorbed through the skin and has harmful effects on the nervous and respiratory system
neuromuscular blocking agent Noun a substance that interferes with the neural transmission between motor neurons and skeletal muscles
newsprint Noun cheap paper made from wood pulp and used for printing newspapers
nickel-base alloy Noun an alloy whose main constituent is nickel
nickel bronze Noun a bronze containing up to 30% nickel
nickel silver Noun a silver-white alloy containing copper and zinc and nickel
nickel steel Noun an alloy steel containing nickel
nicotinamide adenine dinucleotide Noun a coenzyme present in most living cells and derived from the B vitamin nicotinic acid
nicotinamide adenine dinucleotide phosphate Noun a coenzyme similar to NAD and present in most living cells but serves as a reductant in different metabolic processes
nitride Noun a compound containing nitrogen and a more electropositive element (such as phosphorus or a metal)
nitrobenzene Noun a poisonous oily water-soluble liquid used as a solvent and in the manufacture of aniline
nitrofuran Noun derivative of furan used to inhibit bacterial growth
nitrogenase Noun an enzyme of nitrogen-fixing microorganisms that catalyzes the conversion of nitrogen to ammonia
nuclease Noun general term for enzymes that catalyze the hydrolysis of nucleic acid by cleaving chains of nucleotides into smaller units
nucleic acid Noun (biochemistry) any of various macromolecules composed of nucleotide chains that are vital constituents of all living cells
nucleoside Noun a glycoside formed by partial hydrolysis of a nucleic acid
nucleotide Noun a phosphoric ester of a nucleoside
nurse log Noun a large decomposing tree trunk that has fallen, usually in a forest
nitrogen trichloride Noun a yellow pungent volatile oil (trade name Agene) formerly used for bleaching and aging flour
natural rubber Noun an elastic material obtained from the latex sap of trees (especially trees of the genera Hevea and Ficus) that can be vulcanized and finished into a variety of products
neoprene Noun a synthetic rubber that is resistant to oils and aging
notepad Noun a pad of paper for keeping notes
nitrate Noun any compound containing the nitrate group (such as a salt or ester of nitric acid)
nitrate Verb treat with nitric acid, so as to change an organic compound into a nitrate
nitro group Noun the group -NO3
nitrite Noun the radical -NO2 or any compound containing it (such as a salt or ester of nitrous acid)
nonsteroid Noun an organic compound that does no contain a steroid
nephrotoxin Noun any toxin that affects the kidneys
neurotoxin Noun any toxin that affects neural tissues
neurolysin Noun any toxin that affects neural tissues
nitramine Noun a yellow crystalline explosive solid that is used in detonators
niacin Noun a B vitamin essential for the normal function of the nervous system and the gastrointestinal tract
naphthoquinone Noun a fat-soluble vitamin that helps in the clotting of blood
natrolite Noun a group of minerals of the zeolite family consisting of a hydrous silicate of sodium and aluminum
neonatal period Noun the first 28 days of life
note value Noun (music) the relative duration of a musical note
nonce Noun the present occasion
nineties Noun the time of life between 90 and 100
nineties Noun the decade from 1990 to 1999
nineties Noun the decade from 1890 to 1899
nonage Noun any age prior to the legal age
noon Noun the middle of the day
noonday Noun the middle of the day
noonday Adjective of or at the middle of the day