pyrite pyritaceous • pyrites · · · Info · Definitions · Synonyms · Characters · · pyrite · · Text Latin · · Script 6 · · Length Definitions · · · (noun) a common mineral (iron disulfide) that has a pale yellow color. Synonyms: iron pyrite, fool's gold. · · Noun Definition 1 Synonyms · · · iron pyrite · · Synonym 1 fool's gold · · Synonym 2 Characters · · e latin small letter e U+0065 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 y latin small letter y U+0079