What is the meaning of Invalid?

Not valid; not true, correct, acceptable or appropriate.

Any person with a disability or illness.

A person who is confined to home or bed because of illness, disability or injury; one who is too sick or weak to care for themselves.

A disabled member of the armed forces; one unfit for active duty due to injury.

Suffering from disability or illness.

Intended for use by an invalid.

To exempt from (often military) duty because of injury or ill health.

To make invalid or affect with disease.

invalid

disabled, handicapped

invalid

bankrupt

crippled, disabled

cripple, disabled person

invalid

a disabled person

Source: wiktionary.org