nonzero adjective 2noun 1forms 2 adjective2 •Of a quantity, not equal to zero. •(informal) Of an unspecified positive quantity.Under sharp questioning from Judge Paul S. Diamond, however, they conceded that Trump in fact had “a nonzero number of people in the room,” leaving Diamond audibly exasperated. — 2020 noun1 •A quantity which is not zero.The function has 1074 nonzeros. formsnonzeroes · nonzeros