Where does “Tersanctus” come from?

Tersanctus (English) comes from Latin sanctus, from Latin sancio, from Proto-Italic sankjō, from Proto-Indo-European sh₂nékti ~ sh₂nkénti, from Proto-Indo-European seh₂k- — sacred.

Tersanctus (English): The Trisagion (beginning “Holy God, Holy Mighty, Holy Immortal …”)

Definitions

  1. The Trisagion (beginning “Holy God, Holy Mighty, Holy Immortal …”)

Ancestry of “Tersanctus”, step by step

Tersanctus traces back through two separate lines of ancestry.

via Latin sanctus

StepLanguageWordMeaning
1Latinsanctussacred, made inviolable, having been established...
2LatinsancioI render, make or appoint as sacred or inviolable...
3Proto-Italicsankjō
4Proto-Indo-Europeansh₂nékti ~ sh₂nkénti
5Proto-Indo-Europeanseh₂k-sacred

via Latin ter

StepLanguageWordMeaning
1Latinterthrice
2Latinterr
3Old Latintris
4Proto-Italictrēsthree
5Proto-Indo-European*tréyes
Every word from Proto-Indo-European seh₂k-Every word from Proto-Indo-European sh₂nékti ~ sh₂nkéntiEvery word from Proto-Italic sankjō