Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. One who is incapacitated by a chronic illness or disability.
  • adj. Incapacitated by illness or injury.
  • adj. Of, relating to, or intended for invalids.
  • transitive v. To incapacitate physically.
  • transitive v. 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).
  • adj. Not legally or factually valid; null: an invalid license.
  • adj. Falsely based or reasoned; faulty: an invalid argument.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Not valid; not true, correct, acceptable or appropriate.
  • n. One who is confined to home or bed because of illness, disability or injury
  • n. Any person with a disability.
  • adj. Intended for use by an invalid.
  • v. To exempt from duty because of injury or ill health.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Of no force, weight, or cogency; not valid; weak.
  • adj. Having no force, effect, or efficacy; void; null.
  • n. A person who is weak and infirm; one who is disabled for active service; especially, one in chronic ill health who is unable to care for himself.
  • adj. Not well; feeble; infirm; sickly.
  • transitive v. To make or render invalid or infirm.
  • transitive v. To classify or enroll as an invalid.

from The Century Dictionary and Cyclopedia

  • Not valid; of no force, weight, or cogency; weak.
  • In law, having no validity or binding force; wanting efficacy; null; void: as, an invalid contract or agreement.
  • Deficient in health; infirm; weak; sick.
  • n. An infirm or sickly person; one who is affected by disease or disabled by any infirmity.
  • n. Hence Something that is damaged, or the worse for wear, but not so much as to be wholly unserviceable.
  • To affect with disease; render an invalid: chiefly in the past participle.
  • To register as an invalid; enroll on the list of invalids in the military or naval service; give leave of absence from duty on account of ill health.
  • To cause one's self to be registered as an invalid.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. no longer valid
  • adj. having no cogency or legal force
  • v. force to retire, remove from active duty, as of firemen
  • v. injure permanently
  • n. someone who is incapacitated by a chronic illness or injury

Etymologies

From invalid2 (influenced by French invalide, sickly, infirm).
Latin invalidus, weak : in-, not; see in-1 + validus, strong (from valēre, to be strong; see wal- in Indo-European roots).
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin invalidus ("infirm, weak"), from in- ("not") + validus ("strong") (Wiktionary)

Examples

  • This revision adds requested functionality for outputting invalid or outdated standard numbers represented in subfields $y or $z in MARC 010, 020, 022, 024, 028, and 037 to the @invalid in MODS.

    Archive 2007-01-28

  • 340 Chapter 11: Searching and browsing Figure 11.4 Ferret throws an exception when given an invalid search string. @invalid = true end end end Here we tell rescue to catch the specific exception raised by Ferret parsing errors, and then set the @invalid instance variable so that we can put an appropriate message in the view (Figure 11.5): Listing 11.13 app/views/community/search. rhtml

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  • Gadhafi to French President Nicolas Sarkozy and British Prime Minister David Cameron and U.N. Secretary General Ban Ki-moon in which he called "invalid" the United Nations resolution passed last week authorizing the use of force against the regime in order to halt its slaughter of rebels and opposition figures.

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  • Soon afterwards, Attia ruled the woman was not Jewish and that therefore the marriage was invalid from the start, and the couple did not need a divorce.

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  • He's not feeling great and it's the latest craze in invalid food in our house.

    Rainy day

  • Tried to click on the challenge and got a no-can-do message about in invalid URL.

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  • He also produces a "Wanda Errors Report", which identifies certain invalid ballots, such as duplicates from the same registered voters.

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  • To obtain South Dakota plates solely because of the notion that your Mexican Insurance will be invalid is hogwash. alex.

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  • If the courts agree with us, the treaty will be declared invalid from the get-go.

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  • If the invalid is forced, by his avocations, to continue occupations requiring much thinking, the injury is doubly great.

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