Where does “cốt lõi” come from?

cốt lõi (Vietnamese) comes from Vietnamese cốt, from Chinese 骨, from English quarter, from Middle English quarter, from Anglo-Norman quarter, from Latin quartarius, from Latin quārtus, from Proto-Indo-European kʷeturtos — and.

cốt lõi (Vietnamese): essence; kernel; core

Definitions

  1. essence; kernel; core

Ancestry of “cốt lõi”, step by step

cốt lõi traces back through two separate lines of ancestry.

via Vietnamese cốt

StepLanguageWordMeaning
1Vietnamesecốtbone, skeleton; extract; concentrated
2Chinesebone
3Englishquarter"A fourth part of something."; "Place or...
4Middle EnglishquarterA quarter fourth part of something
5Anglo-Normanquarter
6Latinquartariusquartarius, a Roman unit of liquid measure equivalent to about 0.14 L
7Latinquārtusfourth
8Proto-Indo-Europeankʷeturtos
9Proto-Indo-Europeankʷetwóresfour
10Proto-Indo-Europeankʷe-and

via Vietnamese lõi

StepLanguageWordMeaning
1Vietnameselõicore
Every word from Proto-Indo-European kʷe-Every word from Proto-Indo-European kʷetwóresEvery word from Proto-Indo-European kʷeturtos