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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.


(ˌɪn vəˈlɪd ɪ ti)

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


(ˌɪn vəˈlɪd ɪ ti)

[1905–10; invalid1 + -ity]
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


noun falsity, fallacy, unsoundness, inconsistency, irrationality, illogicality, speciousness, sophism, fallaciousness He brushed aside claims about the invalidity of a means test.
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


[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


(esp Jur) → Ungültigkeit f; (of deduction, argument)mangelnde Schlüssigkeit or Stichhaltigkeit; (of assumption)Unzulässigkeit f
(= disability)Körperbehinderung f, → Invalidität f


(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 Your passport is out of date and therefore invalid.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
References in classic literature ?
she added, as if supposing that this translation of the word would effectively prove to Prince Vasili the invalidity of his contention.
The EOBI provides monetary benefits to old age workers under programmes such as Old Age Pension, Invalidity Pension, Survivors Pension and Old Age Grants.
Primarily, courts' treatment of patent invalidity as a whole as a "single issue" for the purposes of issue preclusion is out of line with the application of that doctrine in other areas of civil law.
An amount of Rs 230 mln has been disbursed among 5,364 beneficiaries in shape of Invalidity Pension and Rs 65 mln under Old-Age Grant among 2,357 beneficiaries.
But the Federal Circuit's recent precedential decision in In re Morsa is a reminder that press releases can be a potent resource when used by accused infringers to streamline discovery, to uncover key dates in the development of competing technology, and to locate prior art that may serve as essential to an invalidity argument.
Infringement and invalidity determinations and injunctions on Unitary Patents will be enforceable across participating member states.
His underlying point is that while proofs of argument validity can be considered definitive and taken to have theoretical legitimacy, proofs of argument invalidity cannot.
The Government has plans to take the "disability" issue out of GPs' hands and folk will only get invalidity benefit after a compulsory medical.
The Court of Appeals vacated the district court's orders granting summary judgment of non-infringement and invalidity of the LMA patent.
In the latest development in the case, a decision by the BPAI dated 16 August 2010 affirmed the USPTO Examiner's finding of invalidity of two of the claims and reversed the finding of invalidity of the other three asserted claims.
The reason for the high claims of invalidity benefit is because the Thatcher government promoted the movement of income support claimants to invalidity benefit for the sole purpose of lowering the unemployment figures during the 1980s.
The amount of the invalidity benefit is therefore independent of the duration of the insurance periods or periods of residence.