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in·va·lid1  audio  (nv-ld) KEY 

NOUN:
One who is incapacitated by a chronic illness or disability.
ADJECTIVE:
  1. Incapacitated by illness or injury.
  2. Of, relating to, or intended for invalids.
TRANSITIVE VERB:
in·va·lid·ed, in·va·lid·ing, in·va·lids
  1. To incapacitate physically.
  2. Chiefly British To release or exempt from duty because of ill health: "I was not quite sick enough to be invalided out, even though I was of no more use" (Mary Lee Settle).
ETYMOLOGY:
From invalid2 (influenced by French invalide, sickly, infirm)


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