graphite Graphis • graphiter · · · Info · Definitions · Synonyms · Characters · · graphite · · Text Latin · · Script 8 · · Length 2 · · Syllables Definitions · · · (noun) used as a lubricant and as a moderator in nuclear reactors. Synonyms: black lead, plumbago. · · Noun Definition 1 Synonyms · · · black lead · · Synonym 1 plumbago · · Synonym 2 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 h latin small letter h U+0068 i latin small letter i U+0069 p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074