Where does “cuaternion” come from?

cuaternion (Romanian) comes from English quaternion, from Middle English quaternioun, from Latin quaterniō, from Latin quaternī, from Latin quaternus, from Latin quater, from Latin quattŭor, from Portuguese quarto — and.

cuaternion (Romanian): quaternion

Definitions

  1. quaternion

Ancestry of “cuaternion”, step by step

StepLanguageWordMeaning
1EnglishquaternionA group or set of four people or things; A word...
2Middle EnglishquaterniounAn ancient Roman leader of a squad of four soldiers
3LatinquaterniōThe number four (e.g. on a dice)
4Latinquaternī
5Latinquaternusfour each; four at a time
6Latinquaterfour times
7Latinquattŭorfour; 4
8Portuguesequartoordinal form of quatro; fourth; quarter; fourth;...
9Old Portuguesequartoquarter
10Latinquārtusfourth
11Proto-Indo-Europeankʷeturtos
12Proto-Indo-Europeankʷetwóresfour
13Proto-Indo-Europeankʷe-and
Every word from Proto-Indo-European kʷe-