The story
- Proto-Indo-European*sem-
- Proto-Indo-European*sēmi
- Latinsēmi-
- Englishsemi-
- Proto-Indo-European*né
- Proto-Indo-European*n̥-
- Proto-Hellenic*ə-
- Ancient Greekᾰ̓- (ă-)
- Ancient Greekἀν- (an-)
- Proto-Indo-European*h₂ews-
- Proto-Indo-European*h₂ewsér
- Proto-Hellenic*auhḗr
- Ancient Greekᾱ̓ήρ (āḗr)
- Proto-Indo-European*gʷeyh₃-
- Ancient Greekβῐ́ος (bĭ́os)
- Frenchanaérobie
- Englishanaerobic
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Proto-Indo-European*leyg-
- Proto-Germanic*līką
- Englishanaerobically
- English todaysemianaerobically
From semi- + anaerobically.
Etymology from Wiktionary, CC BY-SA 4.0.