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One who is incapacitated by a chronic illness or disability.
1. Incapacitated by illness or injury.
2. Of, relating to, or intended for invalids.
tr.v. 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).
[From invalid (influenced by French invalide, sickly, infirm).]
1. Not legally or factually valid; null: an invalid license.
2. Falsely based or reasoned; faulty: an invalid argument.
[Latin invalidus, weak : in-, not; see in-1 + validus, strong (from valēre, to be strong; see wal- in Indo-European roots).]
in′va·lid′i·ty (-və-lĭd′ĭ-tē) n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
an act of retiring members of the armed forces from active service as a result of wounds or illness
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014