The story
- Proto-Hellenic*plátʰyō
- Proto-Hellenic*plát͏̌t͏̌ō?
- Ancient Greekπλάσσω (plássō)
- Ancient Greekπλᾰστῐκός (plăstĭkós)
- Latinplasticus
- Englishplastic
- Englishplasticize
- English todayplasticizer
From plasticize + -er.
Etymology from Wiktionary, CC BY-SA 4.0.