Where does “rex” come from?

Rex comes from Latin rex, derived from Proto-Indo-European h₃rḗǵs, the oblique stem of h₃reǵ-, meaning ruler or king.

rex (English): An animal which has a genetic recessive variation...

Definitions

  1. An animal which has a genetic recessive variation...

Ancestry of “rex”, step by step

StepLanguageWordMeaning
1Latinrexking, ruler; despot, tyrant; king
2Proto-Italicrēksking
3Proto-Indo-Europeanh₃rḗǵsking, ruler
4Proto-Indo-Europeanh₃reǵ-to straighten, to right oneself; right; just
Every word from Proto-Indo-European h₃reǵ- →Every word from Proto-Indo-European h₃rḗǵs →Every word from Proto-Italic rēks →