Where does “validator” come from?

Validator is derived from English validate, which comes from Medieval Latin validāre, meaning "to make strong," from Latin validus, meaning "strong."

validator (English): One who validates; Something that validates

Definitions

  1. One who validates; Something that validates

Ancestry of “validator”, step by step

validator traces back through two separate lines of ancestry.

via English validate

StepLanguageWordMeaning
1EnglishvalidateTo render valid; To check or prove the validity...
2Medieval Latinvalidātus
3Medieval Latinvalidō
4Latinvalidusstrong; healthy, well; worthy
5Latinvaleōto have strength, influence, power; to avail
6Proto-Italicwalēōto be strong
7Proto-Indo-Europeanh₂wl̥h₁éh₁yeti
8Proto-Indo-Europeanh₂welh₁-to rule; strong, powerful; hair; wool

via English ‐or

StepLanguageWordMeaning
1English‐orCreates an agent noun, often from a verb, indicating a person or object (often machines or parts of them) that do the verb or part of speech with which they are formed
2Middle English-our
3Old French-eorAlternative form of -or
4Latin-ator-ator, -er; second-person singular future passive...
5Latin-tor-er
6Proto-Italic-tōrForms agent nouns to verb stems
7Proto-Indo-European-tōrDerives agent nouns from verbs, denoting someone...
8Proto-Indo-European-tor-s
Every word from Proto-Indo-European h₂welh₁-Every word from Proto-Indo-European h₂wl̥h₁éh₁yetiEvery word from Proto-Italic walēō
validator — Etymology, Origin & Word History | Etymology Explorer