xc x-axis • \xc2\xb5 · · · Info · Definitions · Synonyms · Characters · · xc · · Text Latin · · Script 2 · · Length 1 · · Syllables Definitions · · · (noun) the cardinal number that is the product of ten and nine. Synonyms: ninety, 90, XC. · · Noun Definition 1 (adj) being ten more than eighty. Synonyms: ninety, 90. · · Adjective Definition 1 Synonyms · · · ninety · · Synonym 1 90 · · Synonym 2 Characters · · c latin small letter c U+0063 x latin small letter x U+0078