1590s, from Middle French pétrifier "to make or become stone" (16c.), from Latin petra "rock, crag" (see petrous) + -ficare, from facere "to make, do" (see factitious). Metaphoric sense of "paralyze with fear or shock" first recorded 1771. Related: Petrified; petrifying.[petrify etymology, petrify origin, 英语词源]