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Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This

in·va·lid1

Audio Help [in-vuh-lid; Brit. in-vuh-leed] Pronunciation Key

–noun

1.	an infirm or sickly person.

2.	a person who is too sick or weak to care for himself or herself: My father was an invalid the last ten years of his life.

3.	Archaic. a member of the armed forces disabled for active service.

–adjective

4.	unable to care for oneself due to infirmity or disability: his invalid sister.

5.	of or for invalids: invalid diets.

6.	(of things) in poor or weakened condition: the invalid state of his rocking chair.

–verb (used with object)

7.	to affect with disease; make an invalid: He was invalided for life.

8.	to remove from or classify as not able to perform active service, as an invalid.

9.	British. to remove or evacuate (military personnel) from an active theater of operations because of injury or illness.

–verb (used without object) Archaic.

10.	to become an invalid.

[Origin: 1635–45; < F invalide < L invalidus weak. See in-³, valid

]

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.

Encyclopædia Britannica, Inc.
invalid

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Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This

in·val·id2

Audio Help [in-val-id] Pronunciation Key

–adjective

1.	not valid; without force or foundation; indefensible.

2.	deficient in substance or cogency; weak.

3.	void or without legal force, as a contract.

[Origin: 1625–35; < ML invalidus, L: weak; see invalid¹

]

—Related forms

in·val·id·ly, adverb

in·val·id·ness, noun

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.

American Heritage Dictionary - Cite This Source - Share This

in·va·lid¹ Audio Help   (ĭn'və-lĭd) Pronunciation Key
n.   One who is incapacitated by a chronic illness or disability.

adj.

Incapacitated by illness or injury.
Of, relating to, or intended for invalids.

tr.v. in·va·lid·ed, in·va·lid·ing, in·va·lids

To incapacitate physically.
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 invalid² (influenced by French invalide, sickly, infirm).]

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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.

American Heritage Dictionary - Cite This Source - Share This

in·val·id² Audio Help (ĭn-vāl'ĭd) Pronunciation Key
adj.

Not legally or factually valid; null: an invalid license.
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.

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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.

Online Etymology Dictionary - Cite This Source - Share This
invalid (adj.)

1635, "not strong, infirm," also "of no legal force," from L. invalidus "not strong, infirm, weak, feeble," from in- "not" + validus "strong." Meaning "infirm from sickness, disease, or injury" is from 1642. The noun is first recorded 1704, originally of disabled military men. Invalidate is from 1649. Invalides is short for Fr. Hôtel des Invalides, home for old and disabled soldiers in Paris.

WordNet - Cite This Source - Share This

invalid
adjective
1.	having no cogency or legal force; "invalid reasoning"; "an invalid driver's license" [ant: valid]
2.	no longer valid; "the license is invalid"
noun
1.	someone who is incapacitated by a chronic illness or injury
verb
1.	force to retire, remove from active duty, as of firemen
2.	injure permanently; "He was disabled in a car accident" [syn: disable]

Kernerman English Multilingual Dictionary - Cite This Source - Share This
invalid [inˈvӕlid] adjective

(of a document or agreement etc) having no legal force; not valid
Example: Your passport is out of date and therefore invalid.

Arabic:	لاغٍ، باطِل، غير ساري المَفْعول
Chinese (Simplified):	（法律上）无效的
Chinese (Traditional):	(法律上)無效的
Czech:	neplatný
Danish:	ugyldig
Dutch:	ongeldig
Estonian:	kehtetu
Finnish:	mitätön
French:	non valable
German:	ungültig
Greek:	άκυρος
Hungarian:	érvénytelen
Icelandic:	ógildur
Indonesian:	tidak berlaku
Japanese:	無効の

Korean:	무효인
Latvian:	nederīgs; spēkā neesošs
Lithuanian:	negaliojantis
Norwegian:	ugyldig
Polish:	nieważny
Portuguese (Brazil):	inválido
Portuguese (Portugal):	inválido
Romanian:	lipsit de valabilitate, *de valoare
Russian:	недействительный
Slovak:	neplatný
Slovenian:	neveljaven
Spanish:	nulo
Swedish:	ogiltig
Turkish:	geçersiz, hükümsüz

invalid [ˈinvəlid] noun

a person who is ill or disabled
Example: During his last few years, he was a permanent invalid.

Arabic:	مَريض، مُقْعَد
Chinese (Simplified):	病人
Chinese (Traditional):	病人
Czech:	invalida
Danish:	invalid
Dutch:	invalide
Estonian:	invaliid
Finnish:	sairas, invalidi
French:	malade, invalide
German:	der Invalide
Greek:	ανάπηρος
Hungarian:	beteg
Icelandic:	sjúklingur; öryrki
Indonesian:	cacat, invalid
Japanese:	病身の

Korean:	환자
Latvian:	invalīds
Lithuanian:	ligonis, invalidas
Norwegian:	kronisk syk, ufør, invalid
Polish:	inwalida
Portuguese (Brazil):	doente
Portuguese (Portugal):	inválido
Romanian:	invalid
Russian:	больной; инвалид
Slovak:	invalid
Slovenian:	invalid
Spanish:	inválido, disminuido
Swedish:	invalid, sjukling
Turkish:	yatalak, hasta kimse

invalid1 [ˈinvəlid-liːd] verb

(with out) to remove (especially a soldier) from service, because of illness
Example: He was invalided out of the army.

Arabic:	يَصْرِف من الخِدْمَه العَسْكَرِيَّه لسبب صِحّي
Chinese (Simplified):	因伤病而退伍
Chinese (Traditional):	因傷病而退伍
Czech:	propustit jako invalidu
Danish:	hjemsende
Dutch:	lichamelijk afkeuren en uit de dienst ontslaan
Estonian:	invaliidina teenistusest vabastama
French:	réformer
German:	wegen Invalidität als dienstuntauglich erklären
Greek:	αποστρατεύω λόγω αναπηρίας
Hungarian:	betegség miatt leszerel vkit
Icelandic:	leysa frá þjónustu vegna sára, *veikinda
Indonesian:	dinyatakan cacat

Japanese:	兵役免除になる
Korean:	상이병으로 제대시키다
Latvian:	atbrīvot no karadienesta veselības stāvokļa dēļ
Lithuanian:	atleisti dėl ligos
Polish:	zwolnić ze służby wskutek kalectwa
Portuguese (Brazil):	reformado por doença
Portuguese (Portugal):	ficar inválido
Russian:	демобилизовать по состоянию здоровья
Slovak:	prepustiť ako invalida
Slovenian:	odpustiti zaradi invalidnosti
Spanish:	licenciar por invalidez
Swedish:	tas ur tjänst pga sjukdom
Turkish:	çürüğe çıkarmak

invalid2 [ˈinvəlid-liːd] verb

to cause (especially a soldier) to be disabled
Example: He was invalided in the last war.

Arabic:	يُسَبِّب العَجْز، يُقْعِد
Chinese (Simplified):	使伤残
Chinese (Traditional):	使傷殘
Czech:	zmrzačit
Danish:	invalidere
Dutch:	invalide maken
Estonian:	invaliidiks tegema
French:	rendre infirme
German:	zum Invaliden machen
Greek:	κάνω κπ. ανάπηρο
Hungarian:	(hadi)rokkanttá válik
Icelandic:	gera að öryrkja
Indonesian:	membuat cacat

Japanese:	傷病兵にする
Korean:	병약자가 되게 하다
Latvian:	padarīt par invalīdu
Lithuanian:	padaryti invalidu
Polish:	okaleczyć
Portuguese (Brazil):	tornar-se incapacitado
Portuguese (Portugal):	ficar inválido
Russian:	делать(ся) инвалидом
Slovak:	zmrzačiť
Slovenian:	pohabiti
Spanish:	volverse inválido
Swedish:	invalidisera
Turkish:	sakat kalmak

See also: invalidate

Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Invalid

In*val"id\, a. [Pref. in- not + valid: cf. F. invalide, L. invalidus infirm, weak. Cf. Invalid infirm.]

1. Of no force, weight, or cogency; not valid; weak.

2. (Law) Having no force, effect, or efficacy; void; null; as, an invalid contract or agreement.

Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Invalid

In*val"id\, a. [Pref. in- not + valid: cf. F. invalide, L. invalidus infirm, weak. Cf. Invalid infirm.]

1. Of no force, weight, or cogency; not valid; weak.

2. (Law) Having no force, effect, or efficacy; void; null; as, an invalid contract or agreement.

Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Invalid

In"va*lid\ (?; 277), n. [F. invalide, n. & a., L. invalidus, a. See Invalid null.] A person who is weak and infirm; one who is disabled for active service; especially, one in chronic ill health.

Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Invalid

In"va*lid\ (?; 277), n. [F. invalide, n. & a., L. invalidus, a. See Invalid null.] A person who is weak and infirm; one who is disabled for active service; especially, one in chronic ill health.

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