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VALIDATION | English meaning - Cambridge Dictionary
VALIDATION Definition & Meaning | Dictionary.com
Validation Definition & Meaning - Merriam-Webster
The W3C Markup Validation Service
VALIDATION | definition in the Cambridge English Dictionary
Validation - definition of validation by The Free Dictionary
Validation - Definition, Meaning & Synonyms | Vocabulary.com
VALIDATE | English meaning - Cambridge Dictionary
validation noun - Definition, pictures, pronunciation and usage …
Validate Definition & Meaning - Merriam-Webster