Etymology

blastocyst

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Today it means: The mammalian blastula. Full definition →

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

  1. Ancient Greekβλᾰστᾰ́νω (blăstắnō)
  2. Ancient Greekβλαστός (blastós)
  3. Englishblasto-
  4. Proto-Indo-European*(s)kewH-?
  5. Proto-Indo-European*ḱewh₁-
  6. Proto-Indo-European*ḱuh₁éyeti
  7. Ancient Greekκῠ́ω (kŭ́ō)?
  8. Ancient Greekκύστις (kústis)
  9. Late Latincystis
  10. Englishcyst
  11. English todayblastocyst

From blasto- + cyst.

Etymology from Wiktionary, CC BY-SA 4.0.