estr-

/ɛ.stɹ/

prefix

Used to form names of estrogens.

OriginEnglish estro- ← Latin oestrus ← Ancient Greek οἶστρος (oîstros) →
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Meanings

prefix

alternative UK oestr- · alternative -estr-

  1. alternativebiologyAlternative form of estro-.
  2. medicineUsed to form names of estrogens.

Origin

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

(pharmacology) From estrogen.

Full word history & related roots →
Cite this entry
APA

estr-. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/estr-

MLA

“estr-.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/estr-. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “estr-,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/estr-.

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