Where does “karat” come from?

karat (Malay) comes from English carat, from Middle French carat, from Italian carato, from Arabic قِيرَاط, from Ancient Greek κεράτιον, from Ancient Greek κέρας, from Proto-Hellenic *kérats.

karat (Malay): rust

Definitions

  1. rust

Ancestry of “karat”, step by step

karat traces back through two separate lines of ancestry.

via English carat

StepLanguageWordMeaning
1EnglishcaratA unit of weight for precious stones and pearls,...
2Middle Frenchcaratcarat (measure of purity of gold)
3Italiancaratocarat; share; first-person singular present...
4Arabicقِيرَاطcarat; husk
5Ancient Greekκεράτιονsmall horn; carat, 1⁄1728 of a pound; a Byzantine...
6Ancient Greekκέραςhorn; horn as a material, or anything made of...
7Proto-Hellenic*kérats

via Proto-Malayo-Polynesian kaʀat

StepLanguageWordMeaning
1Proto-Malayo-Polynesiankaʀatto bite
2Proto-Austronesian*kaʀaCto bite to cut off a piece by clamping the teeth

Words derived from “karat

Every word from Proto-Hellenic *kératsEvery word from Ancient Greek κέραςEvery word from Ancient Greek κεράτιον