The story
- Proto-Indo-European*né
- Proto-Indo-European*n̥-
- Proto-Hellenic*ə-
- Ancient Greekᾰ̓- (ă-)
- Ancient Greekἀν- (an-)
- Englishan-
- Englishhydro-
- Englishanhydro-
- Englishtetracycline
- English todayanhydrotetracycline
From anhydro- + tetracycline.
Etymology from Wiktionary, CC BY-SA 4.0.