Where does “pro” come from?

pro (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 (Latin): for

Definitions

  1. for

Ancestry of “pro”, step by step

pro traces back through 3 separate lines of ancestry.

via Latin ratus

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

via Proto-Indo-European pro-

StepLanguageWordMeaning
1Proto-Indo-Europeanpro-toward, forward
2Proto-Indo-Europeanpor-to give birth; forward, through; going, passage
3Proto-Indo-Europeanper-before, in front; first; to go through
4Proto-Indo-Europeanpr̥tóspassed , crossed

via Latin nōmen

StepLanguageWordMeaning
1Latinnōmenname
2Latinestthird-person singular present active indicative...
3Proto-Indo-Europeanh₁éstito be
4Proto-Indo-Europeanh₁es-to be

Words derived from “pro”

Every word from Proto-Indo-European h₂er- →