late 14c., from Old French vivifier "come alive; give life to" (12c.), from Late Latin vivificare "make alive, restore to life," from vivificus "enlivening," from Latin vivus "alive" (see vivid) + root of facere "to make" (see factitious). Vivificate in same sense is recorded from early 15c.[vivify etymology, vivify origin, 英语词源]