90 adj 1: being ten more than eighty [syn: ninety, 90, xc] n 1: the cardinal number that is the product of ten and nine [syn: ninety, 90, XC]
90 \90\ adj. 1. one more than eighty-nine and one less than ninety-one; denoting a quantity consisting of ninety items or units; -- representing the number ninety as Arabic numerals Syn: ninety, xc [WordNet 1.5 +PJC]