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Definition of "invalid" [in•val•id•va•lid]

  • One who is incapacitated by a chronic illness or disability. (noun)
  • Incapacitated by illness or injury. (adjective)
  • Of, relating to, or intended for invalids. (adjective)
  • To incapacitate physically. (verb-transitive)
  • 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). (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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  • "This revision adds requested functionality for outputting invalid or outdated standard numbers represented in subfields $y or $z in MARC 010, 020, 022, 024, 028, and 037 to the @invalid in MODS."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