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Definition of Black lead
1. Noun. Used as a lubricant and as a moderator in nuclear reactors.
Exact synonyms: Graphite, Plumbago
Specialized synonyms: Lead, Pencil Lead, Pencil
Generic synonyms: Atomic Number 6, C, Carbon
Specialized synonyms: Lead, Pencil Lead, Pencil
Generic synonyms: Atomic Number 6, C, Carbon
Definition of Black lead
1. Noun. graphite, one of the allotropes of carbon. ¹
¹ Source: wiktionary.com
Medical Definition of Black lead
1. Plumbago; graphite.It leaves a blackish mark somewhat like lead. See Graphite. Source: Websters Dictionary (01 Mar 1998)