proliferative adjective 2noun 1forms 3 adjective2 •Of or pertaining to proliferation, especially of cells....stem cells may thus lose some of their proliferative potential and thus 'age'... — 1988 •Proliferating; tending to proliferate....they give rise to a progressive, proliferative, chronic arthritis. — 1940 noun1 •Such a cell formsproliferatives · more proliferative · most proliferative