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black lead
black lead L0083900 (lĕd)n. See graphite.black lead (lɛd) n (Elements & Compounds) another name for graphitevbto colour or rub with black leadThesaurus| Noun | 1. |  black lead - used as a lubricant and as a moderator in nuclear reactorsgraphite, plumbagopencil lead, lead - mixture of graphite with clay in different degrees of hardness; the marking substance in a pencilatomic number 6, carbon, C - an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compoundspencil - graphite (or a similar substance) used in such a way as to be a medium of communication; "the words were scribbled in pencil"; "this artist's favorite medium is pencil" |
black lead
black lead: see graphitegraphite
, an allotropic form of carbon, known also as plumbago and black lead. It is dark gray or black, crystalline (often in the form of slippery scales), greasy, and soft, with a metallic luster.
..... Click the link for more information. .black lead[¦blak ′led] (mineralogy) graphite MedicalSeegraphiteblack lead
Synonyms for black leadnoun used as a lubricant and as a moderator in nuclear reactorsSynonymsRelated Words- pencil lead
- lead
- atomic number 6
- carbon
- C
- pencil
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