Etymology

thioanhydride

T1H4I1O1A1N1H4Y4D2R1I1D2E1

Today it means: any analogue of an acid anhydride, or general formula (RC(=O))₂S, in which one oxygen has been replaced by sulfur Full definition →

English anhydride ← Proto-Indo-European *dʰeh₁- ← Ancient Greek ἀν- (an-)
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The story

  1. Proto-Indo-European*dʰewh₂-der.?
  2. Ancient Greekθέειον (théeion)
  3. Ancient Greekθεῖον (theîon)
  4. Englishthio-
  5. Proto-Indo-European*né
  6. Proto-Indo-European*n̥-
  7. Proto-Hellenic*ə-
  8. Ancient Greekᾰ̓- (ă-)
  9. Ancient Greekἀν- (an-)
  10. Englishan-
  11. Englishhydro-
  12. Proto-Indo-European*dʰeh₁-
  13. Englishhydride
  14. Englishanhydride
  15. English todaythioanhydride

From thio- + anhydride.

Etymology from Wiktionary, CC BY-SA 4.0.