The story
- Proto-Indo-European*bʰeh₂-
- Proto-Indo-European*bʰéh₂os
- Proto-Hellenic*pʰáwos
- Ancient Greekφᾰ́ος (phắos)
- Ancient Greekφῶς (phôs)
- Ancient Greekφωτο- (phōto-)
- Englishphoto-
- Proto-Indo-European*h₂ep
- Proto-Indo-European*h₂epó
- Proto-Italic*ap
- Latinab
- Latinab-
- Proto-Indo-European*srebʰ-
- Proto-Indo-European*srobʰéyeti
- Proto-Italic*sorβeō
- Latinsorbeō
- Latinabsorbeō
- Latinabsorptiō
- Englishabsorption
- English todayphotoabsorption
From photo- + absorption.
Etymology from Wiktionary, CC BY-SA 4.0.