• (a.) Pertaining to, or characterized by, petrifaction. • (a.) Having the quality of converting organic matter into stone; petrifying.
Pet`ri·fac'tive adjective 1. Having the quality of converting organic matter into stone; petrifying. 2. Pertaining to, or characterized by, petrifaction. « The . . . petrifactive mutations of hard bodies.» Sir T. Browne.