invalidity

UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˌɪnvəˈlɪdɪti/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/ˌɪnvəˈlɪdɪti/ ,USA pronunciation: respelling(in′və lidi tē)


WordReference Random House Unabridged Dictionary of American English © 2020
in•va•lid•i•ty1  (in′və lidi tē),USA pronunciation n. 
  1. lack of validity.
  • Medieval Latin invaliditās. See invalid2, -ity
  • 1540–50

in•va•lid•i•ty2  (in′və lidi tē),USA pronunciation n. 
  1. invalidism.
  • invalid1 + -ity 1905–10

WordReference Random House Learner's Dictionary of American English © 2020
in•va•lid1 /ˈɪnvəlɪd/USA pronunciation   n. [countable]
  1. an unhealthy person, esp. one who is too sick or weak to care for himself or herself.

adj. 
  1. unable to care for oneself, as through ill health.
  2. of or for invalids.

v. [+ object]
  1. to make (someone) an invalid.
  2. Military[Chiefly Brit.]to evacuate (military personnel) from an area of fighting because of injury or illness.

in•val•id2 /ɪnˈvælɪd/USA pronunciation   adj. 
  1. not valid; without force or a firm foundation;
    that cannot be defended;
    weak in logic:an invalid conclusion.
  2. empty or without legal force:The contract was declared invalid.
in•va•lid•i•ty /ˌɪnvəˈlɪdɪti/USA pronunciation  n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2020
in•va•lid1  (invə lid; Brit. invə lēd′),USA pronunciation n. 
  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.

adj. 
  1. unable to care for oneself due to infirmity or disability:his invalid sister.
  2. of or for invalids:invalid diets.
  3. (of things) in poor or weakened condition:the invalid state of his rocking chair.

v.t. 
  1. to affect with disease;
    make an invalid:He was invalided for life.
  2. to remove from or classify as not able to perform active service, as an invalid.
  3. Military[Brit.]to remove or evacuate (military personnel) from an active theater of operations because of injury or illness.

v.i. Archaic. 
  1. to become an invalid.
  • Latin invalidus weak. See in-3, valid
  • French invalide
  • 1635–45

in•val•id2  (in valid),USA pronunciation adj. 
  1. not valid;
    without force or foundation;
    indefensible.
  2. deficient in substance or cogency;
    weak.
  3. void or without legal force, as a contract.
in•valid•ly, adv. 
in•valid•ness, n. 
  • Medieval Latin invalidus, Latin: weak; see invalid1
  • 1625–35

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