VALID


Meaning of VALID in English

adj. 1 (of a reason, objection, etc.) sound or defensible; well-grounded. 2 a executed with the proper formalities (a valid contract). b legally acceptable (a valid passport). c not having reached its expiry date. validity n. validly adv.

[ F valide or L validus strong (as VALIANT) ]

Concise Oxford English dictionary.      Краткий оксфордский словарь английского языка.