English dictionary
graphite
/'gr/&/f/aI/t/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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used as a lubricant and as a moderator in nuclear reactors
Source: WordNet 3.0
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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 <i>lead pencils</i>), for crucibles, and as a lubricator, etc. Often called <i>plumbago</i> or <i>black lead</i>.
Source: webster1913