Translate invalid | into French | into German | into Italian | into Spanish Definition of invalid
adjective
not valid, in particular. (especially of an official document or procedure) not legally recognized and therefore void because contravening a regulation or law:the vote was declared invalid due to a technicality (especially of an argument, statement, or theory) not true because based on erroneous information or unsound reasoning:a comparison is invalid if we are not comparing like with like (of computer instructions, data, etc.) not conforming to the correct format or specifications.
