Longman Dictionary of Contemporary English homepage

validate

 verb
     
val‧i‧date [transitive]
1 formal to prove that something is true or correct, or to make a document or agreement officially and legally acceptable [= confirm]:
The Supreme Court has validated the lower court's interpretation of the law.
Many scientists plan to wait until the results of the study are validated by future research.
2 to make someone feel that their ideas and feelings are respected and considered seriously:
Talking with people who think like you helps validate your feelings.
3 American English if a business validates a ticket from a parking garage, it puts a special mark on it, showing that it will pay the parking costs
—validation noun [uncountable and countable]
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.
 
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