The story
- Proto-Indo-European*me
- Proto-Indo-European*dʰeh₁-?
- Proto-Indo-European*médʰi
- Proto-Indo-European*médʰyos
- Proto-Italic*meðios
- Latinmedius
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Latinmediālis
- English todaymedial
Borrowed from Latin mediālis (“middle”), from medius (“that is in the middle or midst”) + -ālis (“-al”, adjectival suffix).
Etymology from Wiktionary, CC BY-SA 4.0.