The story
- Proto-Indo-European*kʷetwóres
- Proto-Hellenic*kʷétwores
- Ancient Greekτέσσᾰρες (téssăres)
- Ancient Greekτετρᾰ- (tetră-)
- Englishtetra-
- Englishoxane
- English todaytetraoxane
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A six-membered saturated heterocycle having two carbon atoms and four oxygen atoms; especially the isomer having two peroxide groups (as in the acetone peroxide dimer) Full definition →
Etymology from Wiktionary, CC BY-SA 4.0.