Etymology

monothiohemiacetal

Today it means: any compound, of general formula R₂C(SR')OH or R₂C(OR')SH derived from a hemiacetal by replacing one oxygen with sulfur Full definition →

English hemiacetal ← Ancient Greek θεῖον (theîon) ← Proto-Indo-European *dʰewh₂-der.?
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The story

  1. Ancient Greekμόνος (mónos)
  2. Ancient Greekμονο- (mono-)
  3. Englishmono-
  4. Proto-Indo-European*dʰewh₂-der.?
  5. Ancient Greekθέειον (théeion)
  6. Ancient Greekθεῖον (theîon)
  7. Englishthio-
  8. Englishhemiacetal
  9. English todaymonothiohemiacetal

From mono- + thio- + hemiacetal.

Etymology from Wiktionary, CC BY-SA 4.0.