VALID

adjective Etymology: Middle French or Medieval Latin; Middle French ~e, from Medieval Latin ~us, from Latin, strong, potent, from valēre Date: 1571 having legal efficacy or force, 2. well-grounded or justifiable ; being at once relevant and meaningful , logically correct , appropriate to the end in view ; effective , conforming to accepted principles of sound biological classification, ~ity noun ~ly adverb Synonyms: see: ~