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nitrohydrochloric acid |
Noun
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a yellow fuming corrosive mixture of nitric and hydrochloric acid that dissolves metals (including gold) |
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norethindrone |
Noun
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a synthetic progestational hormone (trade name Norlutin) used in oral contraceptives and to treat endometriosis |
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norethindrone acetate |
Noun
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a synthetic progestational hormone (trade name Norlutin) used in oral contraceptives and to treat endometriosis |
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norethandrolone |
Noun
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a synthetic progestational hormone (trade name Norlutin) used in oral contraceptives and to treat endometriosis |
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norethynodrel |
Noun
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a progesterone derivative used in oral contraceptives and in the control of menstruation and the treatment of abnormal uterine bleeding |
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norgestrel |
Noun
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synthetic progestin used in oral contraceptives |
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nandrolone |
Noun
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an androgen (trade names Durabolin or Kabolin) that is used to treat testosterone deficiency or breast cancer or osteoporosis |
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nacre |
Noun
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the iridescent internal layer of a mollusk shell |
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nitric acid |
Noun
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acid used especially in the production of fertilizers and explosives and rocket fuels |
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nitrous acid |
Noun
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an unstable inorganic acid known only in solution and as nitrite salts |
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nitrogen oxide |
Noun
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any of several oxides of nitrogen formed by the action of nitric acid on oxidizable materials |
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nitrochloroform |
Noun
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a heavy colorless insoluble liquid compound that causes tears and vomiting |
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nitrochloromethane |
Noun
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gaseous form of chloropicrin used as tear gas |
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neem cake |
Noun
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residue after oil is pressed from neem seeds |
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nitrocellulose |
Noun
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a nitric acid ester |
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nitrocotton |
Noun
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a nitric acid ester |
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native sulfur |
Noun
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an old name for sulfur |
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native sulphur |
Noun
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an old name for sulfur |
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neurochemical |
Noun
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any organic substance that occurs in neural activity |
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neurotransmitter |
Noun
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a neurochemical that transmits nerve impulses across a synapse |
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nonconductor |
Noun
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a material such as glass or porcelain with negligible electrical or thermal conductivity |
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nuclear RNA |
Noun
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ribonucleic acid found in the nucleolus of the cell |
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nRNA |
Noun
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ribonucleic acid found in the nucleolus of the cell |
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nitrile |
Noun
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any of a class of organic compounds containing the cyano radical -CN |
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nitril |
Noun
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any of a class of organic compounds containing the cyano radical -CN |
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noncoding DNA |
Noun
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sequence of a eukaryotic gene's DNA that is not translated into a protein |
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natural glass |
Noun
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magma of any composition that cooled very rapidly |
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natural resin |
Noun
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a plant exudate |
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niter |
Noun
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(KNO3) used especially as a fertilizer and explosive |
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nitre |
Noun
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(KNO3) used especially as a fertilizer and explosive |
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nitroglycerin |
Noun
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a heavy yellow poisonous oily explosive liquid obtained by nitrating glycerol |
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nitroglycerine |
Noun
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a heavy yellow poisonous oily explosive liquid obtained by nitrating glycerol |
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night soil |
Noun
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human excreta used as fertilizer |
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nutrient agar |
Noun
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any culture medium that uses agar as the gelling agent |
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neroli oil |
Noun
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an odoriferous yellow oil found in orange flowers and used in perfumery and as a flavoring |
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nitrogen mustard |
Noun
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a toxic compound resembling mustard gas in structure |
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napalm |
Noun
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gasoline jelled with aluminum soaps |
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naphtha |
Noun
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any of various volatile flammable liquid hydrocarbon mixtures |
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naphthalene |
Noun
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a white crystalline strong-smelling hydrocarbon made from coal tar or petroleum and used in organic synthesis and as a fumigant in mothballs |
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naphthol |
Noun
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either of two phenols derived from naphthalene |
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natural fiber |
Noun
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fiber derived from plants or animals |
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natural fibre |
Noun
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fiber derived from plants or animals |
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natural gas |
Noun
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a fossil fuel in the gaseous state |
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naval brass |
Noun
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alpha-beta brass containing tin |
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neat's-foot oil |
Noun
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a pale yellow oil made from the feet and legs of cattle |
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nerve gas |
Noun
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a toxic gas that is inhaled or absorbed through the skin and has harmful effects on the nervous and respiratory system |
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nerve agent |
Noun
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a toxic gas that is inhaled or absorbed through the skin and has harmful effects on the nervous and respiratory system |
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neuromuscular blocking agent |
Noun
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a substance that interferes with the neural transmission between motor neurons and skeletal muscles |
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newsprint |
Noun
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cheap paper made from wood pulp and used for printing newspapers |
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nickel-base alloy |
Noun
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an alloy whose main constituent is nickel |