Where does “platen” come from?

platen (Middle English) comes from Old French plater, from Latin plata, from Vulgar Latin platta, from Latin plattus, from Ancient Greek πλατύς, from Proto-Indo-European pléth₂us, from Proto-Indo-European pleth₂- — flat.

Ancestry of “platen”, step by step

StepLanguageWordMeaning
1Old Frenchplaterplatter
2Latinplatasilver
3Vulgar Latinplattametal plate
4Latinplattusflattened
5Ancient Greekπλατύςwide, broad; flat, level; broad-shouldered
6Proto-Indo-Europeanpléth₂usflat, broad
7Proto-Indo-Europeanpleth₂-flat
Every word from Proto-Indo-European pleth₂- →Every word from Proto-Indo-European pléth₂us →Every word from Ancient Greek πλατύς →