Online Google Dictionary

invalid 中文解釋 wordnet sense Collocation Usage Collins Definition
Adjective
/ˈinvəlid/,
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invalids, plural;
  1. Not valid, in particular

  2. (esp. of an official document or procedure) Not legally recognized and therefore void because contravening a regulation or law
    • - the vote was declared invalid due to a technicality
  3. (esp. of an argument, statement, or theory) Not true because based on erroneous information or unsound reasoning
    • - a comparison is invalid if we are not comparing like with like
  4. (of computer instructions, data, etc.) Not conforming to the correct format or specifications

Verb
  1. Remove (someone) from active service in the armed forces because of injury or illness
    • - he was badly wounded and invalided out of the infantry
  2. Disable (someone) by injury or illness

Noun
  1. A person made weak or disabled by illness or injury
    • - an invalid husband
  1. someone who is incapacitated by a chronic illness or injury
  2. force to retire, remove from active duty, as of firemen
  3. having no cogency or legal force; "invalid reasoning"; "an invalid driver's license"
  4. disable: injure permanently; "He was disabled in a car accident"
  5. no longer valid; "the license is invalid"
  6. (invalidism) chronic ill health
  7. The name invalid is reserved by the Internet Engineering Task Force (IETF) in RFC 2606 (June 1999) as a domain name that may not be installed as a top-level domain in the Domain Name System (DNS) of the Internet.RFC 2606 (BCP 32), Reserved Top Level DNS Names, D. Eastlake, A. ...
  8. (Invalidity) Disability, according to the World Health Organization, is defined as "...an umbrella term, covering impairments, activity limitations, and participation restrictions. ...
  9. One who is confined to home or bed because of illness, disability or injury; Any person with a disability; To exempt from duty because of injury or ill health; Not valid; not true, correct, acceptable or appropriate
  10. (invalidly) In an invalid manner; without validity
  11. (9 Invalidity) If any part of these terms and conditions is unenforceable (including any provision in which we exclude our liability to you) the enforceability of any other part of these conditions will not be affected.
  12. not legally sufficient; no binding force.
  13. An invalid ticket is a postdated ticket that has not yet become usable. An invalid ticket will be rejected by an application server until it becomes validated. ...
  14. To dream of invalids, is a sign of displeasing companions interfering with your interest. To think you are one, portends you are threatened with displeasing circumstances.
  15. n., adj. 1. n. a possible constituent trait of a character which if present signifies that the character cannot ever appear in a token except under the control of a single escape character. For details, see Section 2.1.4.1 (Constituent Characters). 2. adj. ...
  16. Deductively ineffective; see valid / invalid.
  17. When applied to a measurement scale, a lack of validity means that the numbers assigned do not reflect the true magnitude of the property being measured.  (Pronounced with the second syllable accented, to distinguish this adjective from the homographic noun designating a person in poor health.)
  18. An approach or example that is flawed and does not lead to the correct solution of the problem. An invalid approach would be to simplify the expression from left to right, disregarding the order of operations. A valid approach would be to simplify the expression using the order of operations.
  19. of a logical formula, false under some interpretation.
  20. a soldier who for physical reasons, particularly as the result of enemy action, is incapacitated, and assigned to limited, noncombat duty.
  21. Not valid; ineffective; as if the action had never taken place.
  22. Not valid (q.v.); without legal effect.
  23. An invalid proof (or statement) is one which iS NOT valid.
  24. The state of an object when the cache holding it does not have the current value of the object.
  25. An area of a window is invalid if the window server knows that its content was not drawn by the application. Applications may also invalidate parts of their own windows.