polysomia

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noun

A fetal malformation in which multiple bodies are partially fused together.

OriginEnglish poly- ← Ancient Greek πολῠ́ς (polŭ́s) ← Proto-Indo-European *polh₁ús →
Scrabble 16
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Meanings

nounpolysomia (uncountable)
  1. uncountableA fetal malformation in which multiple bodies are partially fused together.

Origin

  1. Proto-Indo-European*pleh₁-
  2. Proto-Indo-European*polh₁ús
  3. Ancient Greekπολῠ́ς (polŭ́s)
  4. Englishpoly-
  5. Englishpolysomia

From poly- + -some + -ia.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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