Etymology

estro-

Today it means: Estrus. Full definition →

English estrus ← Latin oestrus ← Ancient Greek οἶστρος (oîstros)
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The story

  1. Proto-Indo-European*h₁eysh₂-
  2. Ancient Greekοἶστρος (oîstros)
  3. Latinoestrus
  4. Englishestrus
  5. English todayestro-

From estrus + -o-.

Etymology from Wiktionary, CC BY-SA 4.0.