Etymology

cystidium

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Today it means: A relatively large cell found on the hymenium of a basidiomycete Full definition →

English cyst ← Late Latin cystis ← Ancient Greek κύστις (kústis)
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The story

  1. Proto-Indo-European*(s)kewH-?
  2. Proto-Indo-European*ḱewh₁-
  3. Proto-Indo-European*ḱuh₁éyeti
  4. Ancient Greekκῠ́ω (kŭ́ō)?
  5. Ancient Greekκύστις (kústis)
  6. Late Latincystis
  7. Englishcyst
  8. English todaycystidium

From cyst + -idium.

Etymology from Wiktionary, CC BY-SA 4.0.