Validity

来自Big Physics
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wiktionary

ref 

valid +‎  -ity, borrowed from Middle French validité, from Late Latin validitas.


etymonline

ref

validity (n.)

1540s, from French validité or directly from Late Latin validitatem (nominative validitas) "strength," from Latin validus (see valid).

取自“https://www.bigphysics.org/index.php?title=Validity&oldid=26244”