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Meaning of BLACK LEAD

Pronunciation:  blak led

 
WordNet Dictionary
 
 Definition: 
[n]  used as a lubricant and as a moderator in nuclear reactors
 
 Synonyms: graphite, plumbago
 
 See Also: atomic number 6, C, carbon, lead, pencil lead

 

 

Webster's 1913 Dictionary
 
 Definition: 
\Black` lead"\
Plumbago; graphite. It leaves a blackish mark somewhat like
lead. See {Graphite}.

 

 

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