1640s, "perfected," past-participle adjective from consummate (v.). Of marriage, from 1709; earlier consummate (adj.) was used in this sense (1530s).
Entries linking to consummated
consummate v.
mid-15c., "to bring to completion, finish by completing what was intended," from Latin consummatus, past participle of consummare "to sum up, make up, complete, finish," from assimilated form of com "together, with" (see con-) + summa "sum, total," from summus "highest" (see sum (n.)).
Meaning "to bring a marriage to completion" (by sexual intercourse) is from 1530s. Related: Consummated; consummating.