Category:Invalid

In*val"id, a. Etym: [Pref. in- not + valid: cf. F. invalide, L. invalidus infirm, weak. Cf. Invalid infirm.]

1. Of no force, weight, or cogency; not valid; weak.

2. (Law)

Defn: Having no force, effect, or efficacy; void; null; as, an invalid contract or agreement.

invalid In"va*lid, n. Etym: [F. invalide, n. & a., L. invalidus, a. See Invalid null.]

Defn: A person who is weak and infirm; one who is disabled for active service; especially, one in chronic ill health.

invalid In"va*lid, a. Etym: [See Invalid, n.]

Defn: Not well; feeble; infirm; sickly; as, he had an invalid daughter.

invalid In"va*lid, v. t.

1. To make or render invalid or infirm. "Invalided, bent, and almost blind." Dickens.

2. To classify or enroll as an invalid. Peace coming, he was invalided on half pay. Carlyle.