Where does “pro rata parte” come from?

pro rata parte (Latin) comes from Latin ratus, from Latin rēōr, from Proto-Italic rēōr, from Proto-Indo-European h₂reh₁-, from Proto-Indo-European h₂er- — to fit, to fix, to put together.

pro rata parte (Latin): according to a fixed part

Definitions

  1. according to a fixed part

Ancestry of “pro rata parte”, step by step

StepLanguageWordMeaning
1Latinratusconsidered, having been considered; established,...
2Latinrēōrto reckon, calculate
3Proto-Italicrēōrto reckon, to calculate; to think, to deem, to...
4Proto-Indo-Europeanh₂reh₁-to think, reason; to arrange
5Proto-Indo-Europeanh₂er-to fit, to fix, to put together
Every word from Proto-Indo-European h₂er- →Every word from Proto-Indo-European h₂reh₁- →Every word from Proto-Italic rēōr →