protosome

P3R1O1T1O1S1O1M3E1

noun

The proboscis of hemichordate animals.

OriginAncient Greek σῶμα (sôma) ← Proto-Hellenic *styṓmə? ← Proto-Indo-European *(s)tyoH-mn̥ →
Scrabble 13
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Meanings

nounprotosome (plural protosomes)

plural protosomes

  1. The proboscis of hemichordate animals.

Origin

  1. Proto-Indo-European*per-der.?
  2. Proto-Indo-European*pér
  3. Proto-Indo-European*pró
  4. Ancient Greekπρό (pró)
  5. Ancient Greekπρῶτος (prôtos)
  6. Ancient Greekπρωτο- (prōto-)
  7. Englishproto-
  8. Proto-Indo-European*tewh₂-
  9. Proto-Indo-European*twoH-mn̥
  10. Proto-Hellenic*twṓmə?
  11. Proto-Indo-European*styeH-
  12. Proto-Indo-European*(s)tyoH-mn̥
  13. Proto-Hellenic*styṓmə?
  14. Ancient Greekσῶμα (sôma)
  15. Englishprotosome

From proto- + -some.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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