Etymology

obesity

obes·i·ty
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Today it means: The state of being obese. Full definition →

French obésité ← Latin obēsitās
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The story

  1. Latin · derived fromobēsitās
  2. French · derived fromobésité
  3. English todayobesity

From French obésité, from Latin obēsitās, from obēsus (“fat”). By surface analysis, obese + -ity.

Etymology from Wiktionary, CC BY-SA 4.0.