Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “valid”

See all translations

valid

adjective uk   /ˈvæl.ɪd/ us  
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.
Compare
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?
More examples
validity
noun [U] uk   /vəˈlɪd.ɪ.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   /-li/ us  
(Definition of valid from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of valid?
Add Cambridge dictionaries to your browser to your website

Definitions of “valid” in other dictionaries

Word of the Day

beginner's luck

unexpected success experienced by a person who is just starting a particular activity

Word of the Day

Think long and hard; the language of decisions

by Liz Walter,
January 28, 2015
One of the best ways (perhaps the best way) to improve your English is to learn how words go together in phrases, idioms, or other patterns such as verb/noun or adjective/noun pairs (often called ‘collocations’). This blog looks at some useful phrases and collocations connected with the subject of decisions, something we

Read More 

micro pig noun

January 26, 2015
an extremely small pig, bred to be a pet Micro pigs have become popular pets recently, with famous owners including Victoria Beckham, Paris Hilton and Olympic diver, Tom Daley.

Read More