[ˈɪnvəlɪd], (Noun)

Definitions:
- a person who is weak or unable to take care of themselves on account of illness, injury, or a health condition
(e.g: she spent the rest of her life as an invalid)


Phrases:

Origin:
mid 17th century (as an adjective in the sense ‘infirm or disabled’): a special sense of invalid, with a change of pronunciation

[ˈɪnvəlɪd], (Verb)

Definitions:
- remove (someone) from active service in the armed forces because of injury or illness
(e.g: he was badly wounded and invalided out of the infantry)


Phrases:

Origin:
mid 17th century (as an adjective in the sense ‘infirm or disabled’): a special sense of invalid, with a change of pronunciation

[ɪnˈvalɪd], (Adjective)

Definitions:
- (of an official document or procedure) not legally recognized because it contravenes a regulation or law
(e.g: the will was declared invalid and the children were entitled to the estate)


Phrases:

Origin:
mid 16th century (earlier than valid): from Latin invalidus, from in- ‘not’ + validus ‘strong’ (see valid)