Where does “prīmus” come from?

prīmus (Latin) comes from Latin prīsmos, from Proto-Italic priisemos, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “prīmus”, step by step

prīmus traces back through two separate lines of ancestry.

via Latin prīsmos

StepLanguageWordMeaning
1Latinprīsmos—
2Proto-Italicpriisemosforemost, first
3Proto-Indo-Europeanper-before, in front; first; to go through
4Proto-Indo-Europeanpr̥tóspassed , crossed

via Proto-Italic *prīzmos

StepLanguageWordMeaning
1Proto-Italic*prīzmosforemost, first

Words derived from “prīmus”

Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Proto-Italic priisemos →