The story
- Proto-Indo-European*sper-
- Proto-Indo-European*sper-yeh₂-
- Ancient Greekσπεῖρα (speîra)
- Latinspīra
- Englishspiro-
- Englishacetal
- English todayspiroacetal
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: Any acetal in which the two ether groups are connected by a bridge Full definition →
Etymology from Wiktionary, CC BY-SA 4.0.