Etymology

operatory

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Today it means: effective; practical; operative Full definition →

Medieval Latin operātōrium ← Late Latin operor
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The story

  1. Late Latin · derived fromoperor
  2. Medieval Latin · borrowed fromoperātōrium
  3. English todayoperatory

Originally from Medieval Latin operātōrium, from a participle of Late Latin operor. The modern senses may be derived independently of the obsolete senses.

Etymology from Wiktionary, CC BY-SA 4.0.