1. (

• invalid ,
• shut-in

) someone who is incapacitated by a chronic illness or injury ;

1. (

• invalid

) force to retire, remove from active duty, as of firemen ;

2. (

• disable ,
• invalid ,
• incapacitate ,
• handicap

) injure permanently; "He was disabled in a car accident" ;

1. (

• invalid

) having no cogency or legal force; "invalid reasoning"; "an invalid driver's license" ;

2. (

• invalid

) no longer valid; "the license is invalid" ;