Where does “platelessness” come from?

platelessness (English) comes from English plateless, from English plate, from Old French plate, from Medieval Latin plata, from Vulgar Latin plattus, from Ancient Greek πλατύς, from Proto-Indo-European pléth₂us, from Proto-Indo-European pleth₂- — flat.

platelessness (English): Absence of plates

Definitions

  1. Absence of plates

Ancestry of “platelessness”, step by step

platelessness traces back through two separate lines of ancestry.

via English plateless

StepLanguageWordMeaning
1EnglishplatelessWithout a plate or plates
2EnglishplateA slightly curved but almost flat dish from which...
3Old Frenchplatea flat metal disk; a flat plate of armor
4Medieval Latinplatasilver
5Vulgar Latinplattusflattened; flat; smooth
6Ancient Greekπλατύςwide, broad; flat, level; broad-shouldered
7Proto-Indo-Europeanpléth₂usflat, broad
8Proto-Indo-Europeanpleth₂-flat

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Proto-Indo-European pleth₂-Every word from Proto-Indo-European pléth₂usEvery word from Ancient Greek πλατύς