Where does “arithmeticus” come from?

arithmeticus (Latin) comes from Ancient Greek ἀριθμητική, from Ancient Greek ἀριθμός, from Proto-Indo-European h₂ri-dʰh₁-mó-s, from Proto-Indo-European h₂rey-, from Proto-Indo-European h₂er- — to fit, to fix, to put together.

arithmeticus (Latin): arithmetical

Definitions

  1. arithmetical

Ancestry of “arithmeticus”, step by step

arithmeticus traces back through two separate lines of ancestry.

via Ancient Greek ἀριθμητική

StepLanguageWordMeaning
1Ancient Greekἀριθμητικήcounting
2Ancient Greekἀριθμόςnumber; numbering, counting; arithmetic
3Proto-Indo-Europeanh₂ri-dʰh₁-mó-s
4Proto-Indo-Europeanh₂rey-to count, count out; to arrange
5Proto-Indo-Europeanh₂er-to fit, to fix, to put together

via Ancient Greek ἀριθμητῐκός

StepLanguageWordMeaning
1Ancient Greekἀριθμητῐκόςof or for reckoning, skilled in reckoning

Words derived from “arithmeticus

Every word from Proto-Indo-European h₂er-Every word from Proto-Indo-European h₂rey-Every word from Proto-Indo-European h₂ri-dʰh₁-mó-s
arithmeticus — Etymology, Origin & Word History | Etymology Explorer