invalid

adjective in·val·id \ (ˌ)in-ˈva-ləd \

Definition of invalid

: not valid:

a : being without foundation or force in fact, truth, or law

an invalid assumption

declared the will invalid

b : logically inconsequent

—

invalidly

play \(ˌ)in-ˈva-ləd-lē\ adverb

Origin and Etymology of invalid

Latin invalidus weak, from in- + validus strong — more at valid

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First Known Use: 1542

See Words from the same year

invalid

adjective in·va·lid \ ˈin-və-ləd , British usually -ˌlēd \

Definition of invalid

1 : suffering from disease or disability : sickly

2 : of, relating to, or suited to one that is sick

an invalid chair

Origin and Etymology of invalid

Latin & French; French invalide, from Latin invalidus

NEW! Time Traveler

First Known Use: 1642

See Words from the same year

Other Medicine Terms

analgesia, angina, diabetes, hepatitis, homeopathy, logorrhea, palliate, pandemic

invalid

noun \ ˈin-və-ləd , British usually -ˌlēd \

Definition of invalid

: one who is sickly or disabled

See invalid defined for English-language learners

Examples of invalid in a Sentence

Her husband has become an invalid.

First Known Use of invalid

1701

Other Medicine Terms

analgesia, angina, diabetes, hepatitis, homeopathy, logorrhea, palliate, pandemic

invalid

verb in·va·lid \ ˈin-və-ləd , -ˌlid , British usually -ˌlēd or ˌin-və-ˈlēd \

Definition of invalid

transitive verb

1 : to remove from active duty by reason of sickness or disability

2 : to make sickly or disabled

See invalid defined for English-language learners

First Known Use of invalid

1787

Other Medicine Terms

analgesia, angina, diabetes, hepatitis, homeopathy, logorrhea, palliate, pandemic

INVALID Defined for English Language Learners

invalid

noun

Definition of invalid for English Language Learners

: a person who needs to be cared for because of injury or illness

invalid

verb

Definition of invalid for English Language Learners

: to release (someone) from active military service because of illness or injury

INVALID Defined for Kids

invalid

adjective in·val·id \ in-ˈva-ləd \

Definition of invalid for Students

: having no force or effect

invalid

noun in·va·lid \ ˈin-və-ləd \

Definition of invalid for Students

: a person suffering from sickness or disability

Medical Dictionary

invalid

adjective in·va·lid \ ˈin-və-ləd, British usually -ˌlēd \

medical Definition of invalid

1 : suffering from disease or disability : sickly

2 : of, relating to, or suited to one that is sick

an invalid chair

invalid

noun

medical Definition of invalid

: one who is sickly or disabled

invalid

transitive verb in·va·lid \ ˈin-və-ləd, -ˌlid, British usually -ˌlēd or ˌin-və-ˈlēd \

medical Definition of invalid

1 : to remove from active duty by reason of sickness or disability

was invalided out of the army

2 : to make sickly or disabled

a patient invalided by valvular disease

Law Dictionary

invalid

adjective in·val·id \ in-ˈva-ləd \

legal Definition of invalid

: being without force or effect under the law

declared the will invalid

—

invalidly

adverb

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Origin and Etymology of invalid

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invalid

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invalid

Definition of invalid

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INVALID Defined for English Language Learners

invalid

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invalid

Definition of invalid for English Language Learners

INVALID Defined for Kids

invalid

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invalid

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invalid

medical Definition of invalid

invalid

medical Definition of invalid

invalid

medical Definition of invalid

Law Dictionary

invalid

legal Definition of invalid

invalidly

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