[ oil-hahr-dn ]
/ ˈɔɪlˌhɑr dn /
verb (used with object) Metallurgy.
to quench (steel) in a bath of oil.
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- oil spill,
- oil tanker,
- oil varnish,
- oil well,
- oil-immersion objective,
- oil-seed rape,
Origin of oil-harden
First recorded in 1900–05
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019