Where does “plan” come from?

plan (German) comes from French plan, from French plain, from Old French plain, from Latin plēnus, from Proto-Italic plēnos, from Proto-Indo-European pl̥h₁nós, from Proto-Indo-European pleh₁- — to fill.

plan (German): planar, flat; plain, forthright

Definitions

  1. planar, flat; plain, forthright

Ancestry of “plan”, step by step

plan traces back through two separate lines of ancestry.

via French plan

StepLanguageWordMeaning
1Frenchplanplan; map; plane
2Frenchplainplane
3Old Frenchplainfull; plain; flat
4Latinplēnusfull; filled; complete
5Proto-Italicplēnosfull
6Proto-Indo-Europeanpl̥h₁nósfull
7Proto-Indo-Europeanpleh₁-to fill

via Middle High German plān

StepLanguageWordMeaning
1Middle High Germanplān—
2Latinplānuma plain, level ground

Words derived from “plan”

Every word from Proto-Indo-European pleh₁- →