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*gʷʰer-
- Proto-Indo-European*gʷʰermos
- Proto-Hellenic*kʷʰermós
- Ancient Greekθερμός (thermós)
- Englishthermo-
- Proto-Hellenic*plátʰyō
- Proto-Hellenic*plát͏̌t͏̌ō?
- Ancient Greekπλάσσω (plássō)
- Ancient Greekπλᾰστῐκός (plăstĭkós)
- Latinplasticus
- Englishplastic
- Englishthermoplastic
- English todayphotothermoplastic
From photo- + thermoplastic.
Etymology from Wiktionary, CC BY-SA 4.0.