Identical
来自Big Physics
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late 16th century (in identical (sense 2)): from medieval Latin identicus, from late Latin identitas (see identity).
wiktionary
From identic + -al.
etymonline
identical (adj.)
1610s as a term in logic; general sense of "being the same or very similar" is from 1630s, from Medieval Latin identicus "the same," from Late Latin identitas "identity, sameness," ultimately from combining form of Latin idem "the same" (see idem). Replaced Middle English idemptical (late 15c.), from Medieval Latin idemptitas "identity," from Latin idem. Related: Identically.
