Synonyms: black lead, graphite, plumbago
Definition: used as a lubricant and as a moderator in nuclear reactors
Similar words: C, carbon, atomic number 6
Definition: an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds
Definition: (noun) diminution of swelling; the subsidence of anything swollen
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