validation

noun

val·​i·​da·​tion ˌva-lə-ˈdā-shən 

: an act, process, or instance of validating

especially : the determination of the degree of validity of a measuring device

Synonyms of validation

• evidence
• proof
• testimony
• documentation
• testament
• confirmation

Examples of validation in a Sentence

I'm afraid we cannot act on your claim without validation.

Recent Examples on the Web

The development follows successful laboratory validation in 2025, when the partners demonstrated automotive-scale FEST cells delivering an energy density of 375 Wh/kg. — Jijo Malayil, Interesting Engineering, 30 July 2026

Tour validation for the new mini driver came quickly, with Justin Thomas debuting the GTS300 at an event back in May. — Scott Kramer, Forbes.com, 29 July 2026

The series overall against the Phillies was validation of that. — Jordan McPherson, Miami Herald, 29 July 2026

However, Leo’s shadow can show up as a mix of defensiveness, entitlement or an excessive attachment to validation. — Valerie Mesa, PEOPLE, 27 July 2026

Word History

Etymology

valid(ate) + -ation, perhaps after French validation

First Known Use

circa 1656, in the meaning defined above

Phrases Containing validation

• self-validation

Rhymes for validation

• abdication
• aberration
• abjuration
• abnegation
• abrogation
• acceptation
• acclamation
• acclimation
• accusation
• activation
• actuation
• acylation