Where does “cardio-” come from?

cardio- (English) comes from Ancient Greek Καρδία, from Proto-Hellenic kərdíyā, from Proto-Indo-European ḱr̥díyeh₂, from Proto-Indo-European ḱḗr — heart.

cardio- (English): Relating to the heart; Relating to the cardia of...

Definitions

  1. Relating to the heart; Relating to the cardia of...

Ancestry of “cardio-”, step by step

StepLanguageWordMeaning
1Ancient GreekΚαρδίαheart (as the source of emotion, love, etc.)
2Proto-Hellenickərdíyā
3Proto-Indo-Europeanḱr̥díyeh₂
4Proto-Indo-Europeanḱḗrheart

Words derived from “cardio-

Every word from Proto-Indo-European ḱḗrEvery word from Proto-Indo-European ḱr̥díyeh₂Every word from Proto-Hellenic kərdíyā
cardio- — Etymology, Origin & Word History | Etymology Explorer