estro-

US/ɛ.stɹoʊ/US/ɛ.stɹə/

prefix

Estrus.

“estrogen”

OriginEnglish estrus ← Latin oestrus ← Ancient Greek οἶστρος (oîstros) →
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

prefix

alternative estr- · alternative UK oestro- · alternative UK oestr-

  1. biologyEstrus.

    estrogen

Origin

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

From estrus + -o-.

Full word history & related roots →
Cite this entry
APA

estro-. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/estro-

MLA

“estro-.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/estro-. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “estro-,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/estro-.

Source: estro- on Wiktionary, CC BY-SA 4.0.