Carburise

Part of speech: verb

Definitions

1. To harden the surface of steel by heating it with carbon-rich material so that carbon penetrates the metal
2. To treat steel by exposing it to carbon at high temperature, causing the outer layer to become harder and stronger
3. To increase the carbon content of steel through heat treatment, thereby enhancing its surface hardness and wear resistance

Etymology: "Carburise" is the British spelling of "carburize," and the two forms share one history. The word belongs to the family built on "carbon," so its core meaning is the addition of carbon to something, most often iron or steel, to harden it. Its English spelling reflects the Oxford convention of "-ize," while British usage has long favoured "-ise," which is why this form is the one most British readers will see. The word is a straightforward formation rather than a story with a famous coiner. It combines "carbon" with the verb-forming ending "-ize," from Greek "-izein" through Latin and French, a pattern found in countless technical verbs. The technical sense developed in the metallurgical and chemical vocabulary of the modern era, once the element carbon had been identified and its role in steel understood.

Synonyms: carburize, carbonize