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in·va·lid 1

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).]

in·val·id 2

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.
in·val′id·ly adv.
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.


(ˌɪn vəˈlɪd ɪ ti)

lack of validity.
[1540–50; < Medieval Latin invaliditās. See invalid2, -ity]


(ˌɪn vəˈlɪd ɪ ti)

[1905–10; invalid1 + -ity]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.invalidity - illogicality as a consequence of having a conclusion that does not follow from the premisses
illogic, illogicality, illogicalness, inconsequence - invalid or incorrect reasoning
fallaciousness - result of a fallacy or error in reasoning
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


noun falsity, fallacy, unsoundness, inconsistency, irrationality, illogicality, speciousness, sophism, fallaciousness He brushed aside claims about the invalidity of a means test.
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002
بُطْلان، عَدَم مَفْعوليَّة
ógildi, gildisleysi


A. N
1. [of document, contract] → invalidez f, nulidad f
2. (= illness, disablement) → invalidez f
B. CPD invalidity benefit N (Brit) → prestación f por invalidez
invalidity pension Npensión f de invalidez
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


[ˌɪnvəˈlɪdɪti] n
[action, procedure, document] → nullité f
(= state of being an invalid) → invalidité f invalidity benefitinvalidity benefit npension f d'invalidité, allocation f d'invalidité
Collins English/French Electronic Resource. © HarperCollins Publishers 2005


(esp Jur) → Ungültigkeit f; (of deduction, argument)mangelnde Schlüssigkeit or Stichhaltigkeit; (of assumption)Unzulässigkeit f
(= disability)Körperbehinderung f, → Invalidität f
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007


(inˈvӕlid) adjective
(of a document or agreement etc) having no legal force; not valid. Your passport is out of date and therefore invalid.
inˈvalidate (-deit) verb
to make invalid.
invalidity (invəˈlidəti) noun
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.
References in classic literature ?
un batard!"* she added, as if supposing that this translation of the word would effectively prove to Prince Vasili the invalidity of his contention.
However, particularly for PGRs, where the full range of invalidity arguments is available, this standard is actually quite burdensome.
The cause was widely known by practitioners in the field--the combination of the rate of invalidity findings in the new inter partes review procedure, combined with the Supreme Court decisions in Alice Corp and its progeny (addressing the threshold question of patent eligibility under 35 U.S.C.
All pensioners who have entitlement to "invalidity addition" who attained pensionable age after September 16, 1985, have seen all these positives turned into negatives when the reduction in additional state pensions was used to reduce the amount paid and to reduce a further amount of 'invalidity addition' entitlement.
Infringement and invalidity determinations and injunctions on Unitary Patents will be enforceable across participating member states.
Saudi Prince Al- Waleed Bin Talal is seriously following up with new investment opportunities in Egypt, according to Legal Advisor Mohamed Sami Gamal El-Din, after the Egyptian Administrative Court rejected a case that claimed the invalidity of the Toshka contract.
The Defendants argued that the Court had ruled for the invalidity of the brokerage contract due to its form, despite evidence submitted to prove that the transaction for plot no.
Iran's resident representative to the International Atomic Energy Agency (IAEA), Reza Najafi says that two practical measures within the framework for Iran-IAEA cooperation were not completed due to invalidity of the agency's information.
invalidity of a patent or any claim thereof shall rest on the party
The fact that the terminating event or invalidity of the election was not reasonably within the control of the corporation and, in the case of a termination, was not part of a plan to terminate the election, or the fact that the terminating event or circumstance took place without the corporation's knowledge, notwithstanding its due diligence to safeguard itself against such an event or circumstance, tends to establish that the termination or invalidity of the election was inadvertent (Regs.