Where does “rigor mortis” come from?

rigor mortis (Latin) comes from Latin rigor, from Latin -or, from Proto-Italic -ōs, from Proto-Indo-European -ōs, from Proto-Indo-European -oss, from Proto-Indo-European -os — Creates action nouns or result nouns from verbs;...

rigor mortis (Latin): rigor mortis

Definitions

  1. rigor mortis

Ancestry of “rigor mortis”, step by step

rigor mortis traces back through two separate lines of ancestry.

via Latin rigor

StepLanguageWordMeaning
1Latinrigorstiffness, rigidity; rigor, cold, harshness,...
2Latin-orused to form a third-declension masculine...
3Proto-Italic-ōsCreates masculine action nouns or result nouns...
4Proto-Indo-European-ōsCreates masculine and feminine action nouns or...
5Proto-Indo-European-oss
6Proto-Indo-European-osCreates action nouns or result nouns from verbs;...

via Latin mors

StepLanguageWordMeaning
1Latinmorsdeath; corpse; annihilation
2Proto-Italicmortisdeath
3Proto-Indo-Europeanmértisdeath
4Proto-Indo-Europeanmer-to die; to disappear; sea, lake, wetland

Words derived from “rigor mortis

Every word from Proto-Indo-European -osEvery word from Latin -orEvery word from Latin rigor