1640s, from Medieval Latin validatus, past participle of validare "to make valid," from validus (see valid). Related: Validated; validating.
Entries linking to validate
valid adj.
1570s, "having force in law, legally binding," from French valide (16c.), from Latin validus "strong, effective, powerful, active," from valere "be strong" (from PIE root *wal- "to be strong"). The meaning "sufficiently supported by facts or authority, well-grounded" is first recorded 1640s.
validation n.
"act of giving validity," 1650s, noun of action from validate.