crude petroleum
Naphtha Naph"tha (n[a^]f"th[.a] or n[a^]p"th[.a]), n. [L. naphtha, Gr. na`fqa, fr.Ar. nafth, nifth.] 1. (Chem.) The complex mixture of volatile, liquid, inflammable hydrocarbons, occurring naturally, and usually called {crude petroleum}, {mineral oil}, or {rock oil}. Specifically: That portion of the distillate obtained in the refinement of petroleum which is intermediate between the lighter gasoline and the heavier benzine, and has a specific gravity of about 0.7, -- used as a solvent for varnishes, as a carburetant, illuminant, etc. [1913 Webster]

2. (Chem.) One of several volatile inflammable liquids obtained by the distillation of certain carbonaceous materials and resembling the naphtha from petroleum; as, Boghead naphtha, from Boghead coal (obtained at Boghead, Scotland); crude naphtha, or light oil, from coal tar; wood naphtha, from wood, etc. [1913 Webster]

Note: This term was applied by the earlier chemical writers to a number of volatile, strong smelling, inflammable liquids, chiefly belonging to the ethers, as the sulphate, nitrate, or acetate of ethyl. --Watts. [1913 Webster]

{Naphtha vitrioli} [NL., naphtha of vitriol] (Old Chem.), common ethyl ether; -- formerly called {sulphuric ether}. See {Ether}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • crude petroleum — žalia nafta statusas T sritis chemija apibrėžtis Iš žemės gelmių išgaunama nafta. atitikmenys: angl. base crude; base oil; crude; crude petroleum; mother oil; oil petroleum; row oil; wild oil rus. сырая нефть …   Chemijos terminų aiškinamasis žodynas

  • crude petroleum — See: crude oil …   Petroleum refining glossary

  • crude petroleum — See crude oil …   Ballentine's law dictionary

  • crude petroleum — noun see crude oil …   Useful english dictionary

  • crude petroleum — /kru:d pə trəυliəm/ noun raw petroleum which has not been processed …   Dictionary of banking and finance

  • crude oil — petroleum as it comes from the ground, before refining. Also called crude, crude petroleum. [1860 65] * * * ▪ petroleum product       mixture of comparatively volatile liquid hydrocarbons (compounds composed mainly of hydrogen and carbon with… …   Universalium

  • crude — [kro͞od] adj. cruder, crudest [ME < L crudus, bleeding, raw, rough < IE base * kreu , congealed (blood) > RAW, Gr kryos, frost & kreas, flesh, L crusta, cruor, MIr cru, blood] 1. in a raw or natural condition, before being prepared for… …   English World dictionary

  • Petroleum — Pe*tro le*um, n. [NL., fr. L. petra a rock + oleum oil: cf. F. p[ e]trole. Cf. {Petrify}, and {Oil}.] Rock oil, mineral oil, or natural oil, a dark brown or greenish inflammable liquid, which, at certain points, exists in the upper strata of the… …   The Collaborative International Dictionary of English

  • Petroleum spirit — Petroleum Pe*tro le*um, n. [NL., fr. L. petra a rock + oleum oil: cf. F. p[ e]trole. Cf. {Petrify}, and {Oil}.] Rock oil, mineral oil, or natural oil, a dark brown or greenish inflammable liquid, which, at certain points, exists in the upper… …   The Collaborative International Dictionary of English

  • petroleum refining — Introduction  conversion of crude oil into useful products. History Distillation of kerosene and naphtha       The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …   Universalium

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