invalid1

 
Pronunciation: /ˈɪnvəlɪd/

noun

  • a person made weak or disabled by illness or injury: she spent the rest of her life as an invalid [as modifier]: her invalid husband

verb (invalids, invaliding, invalided)

[with object]
  • remove (someone) from active service in the armed forces because of injury or illness: he was badly wounded and invalided out of the infantry
  • disable (someone) by injury or illness: an officer invalided by a chest wound

Derivatives

invalidism

noun

Origin:

mid 17th century (as an adjective in the sense 'infirm or disabled'): a special sense of invalid2, with a change of pronunciation