black lead

black lead
Graphite Graph"ite, n. [Gr. gra`fein to write: cf. F. graphite. See {Graphic}.] (Min.) Native carbon in hexagonal crystals, also foliated or granular massive, of black color and metallic luster, and so soft as to leave a trace on paper. It is used for pencils (improperly called lead pencils), for crucibles, and as a lubricator, etc. Often called {plumbago} or {black lead}. [1913 Webster]

{Graphite battery} (Elec.), a voltaic battery consisting of zinc and carbon in sulphuric acid, or other exciting liquid. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

См. также в других словарях:

  • Black lead — Lead Lead (l[e^]d), n. [OE. led, leed, lead, AS. le[ a]d; akin to D. lood, MHG. l[=o]t, G. loth plummet, sounding lead, small weight, Sw. & Dan. lod. [root]123.] 1. (Chem.) One of the elements, a heavy, pliable, inelastic metal, having a bright,… …   The Collaborative International Dictionary of English

  • Black lead — Plumbago; graphite. It leaves a blackish mark somewhat like lead. See {Graphite}. [1913 Webster] …   The Collaborative International Dictionary of English

  • black lead — n. graphite, as used in lead pencils, etc …   English World dictionary

  • black-lead — Blacklead Black lead , black lead lack lead, v. t. To coat or to polish with black lead (graphite). [1913 Webster] …   The Collaborative International Dictionary of English

  • black-lead — /ˈblæk lɛd/ (say blak led) verb (t) to blacken or polish with black lead …   Australian English dictionary

  • black lead — noun used as a lubricant and as a moderator in nuclear reactors • Syn: ↑graphite, ↑plumbago • Hypernyms: ↑carbon, ↑C, ↑atomic number 6 • Hyponyms: ↑lead, ↑ …   Useful english dictionary

  • black lead — /led/, Mineral. graphite; plumbago. [1575 85] * * *        graphite (q.v.), though the term is a misnomer, since graphite does not contain any lead. * * * …   Universalium

  • black lead — cerrusite (lead carbonate) …   Eponyms, nicknames, and geographical games

  • black lead — noun (U) a soft black substance; graphite …   Longman dictionary of contemporary English

  • black lead — noun graphite, one of the allotropes of carbon. Syn: graphite …   Wiktionary

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