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Meaning of “valid” in the English Dictionary

"valid" in British English

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validadjective

uk   /ˈvæl.ɪd/  us   /ˈvæl.ɪd/
B2 based on truth or reason; able to be accepted: a valid argument/criticism/reason My way of thinking might be different from yours, but it's equally valid.
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B2 A ticket or other document is valid if it is based on or used according to a set of official conditions that often include a time limit: My passport is valid for another two years.
having legal force: Is this contract/ticket/agreement still valid?

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validity
noun [U] uk   /vəˈlɪd.ə.ti/  us   /vəˈlɪd.ə.t̬i/
C2 This research seems to give/lend some validity to the theory that the drug might cause cancer.
validly
adverb uk   /ˈvæl.ɪd.li/  us   /ˈvæl.ɪd.li/
(Definition of valid from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"valid" in American English

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validadjective

 us   /ˈvæl·ɪd/
based on truth or reason; able to be accepted: The money was gone, and the only valid conclusion was that someone had stolen it.
A valid document is legally acceptable, usually because it has been done according to official rules: You must have a valid driver’s license to drive a car.
validity
noun [U]  us   /vəˈlɪd·ɪ·t̬i/
Some experts questioned the validity of the president’s ideas.
validly
adverb  /ˈvæl·ɪd·li/
(Definition of valid from the Cambridge Academic Content Dictionary © Cambridge University Press)

"valid" in Business English

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validadjective

uk   us   /ˈvælɪd/
a valid ticket, document, agreement, etc. is legal and can be officially accepted, usually for a particular period of time: Is this ticket still valid? A credit card is not usually accepted as a valid form of I.D. Applicants must be in possession of a valid passport.valid for 6 months, a year, etc. Permits are valid for a year. The court decided shareholders had a valid claim against the Chairman for his part in the company's downfall.
IT valid data or details are accepted by a computer system because they are correct
that can be accepted as being true or reasonable: The points she made were perfectly valid.
validly
adverb
Make sure that your company documents have been validly signed.
(Definition of valid from the Cambridge Business English Dictionary © Cambridge University Press)
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“valid” in British English

“valid” in American English

“valid” in Business English

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