Jun 18, 2026 · The meaning of INVALID is not valid. How to use invalid in a sentence.

INVALID definition: an infirm or sickly person. See examples of invalid used in a sentence.

INVALID definition: 1. An invalid document, ticket, law, etc. is not legally or officially acceptable: 2. An invalid…. Learn more.

May 17, 2026 · invalid (third-person singular simple present invalids, present participle invaliding, simple past and past participle invalided) (UK, transitive) To exempt from (often military) duty because of …

6 meanings: 1. a. a person with disablement or chronic ill health b. (as modifier) 2. incapacitated or disabled by injury,.... Click for more definitions.

Define invalid. invalid synonyms, invalid pronunciation, invalid translation, English dictionary definition of invalid. n. One who is incapacitated by a chronic illness or disability. adj. 1. Incapacitated by illness …

adj. unable to care for oneself due to infirmity or disability: his invalid sister. of or for invalids: invalid diets. (of things) in poor or weakened condition: the invalid state of his rocking chair. v.t. to affect with …

invalid: Not valid; of no force, weight, or cogency; weak.

Invalid definition: To incapacitate physically. Origin of Invalid Latin invalidus weak in- not in– 1 validus strong (from valēre to be strong wal- in Indo-European roots) From American Heritage Dictionary of …

Definition of INVALID in the Definitions.net dictionary. Meaning of INVALID. What does INVALID mean? Information and translations of INVALID in the most comprehensive dictionary definitions resource …