[ self-hahr-dn-ing, self- ]
/ ˌsɛlfˈhɑr dn ɪŋ, ˈsɛlf- /
noting or pertaining to any of various steels that harden after heating without quenching or other treatment.
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Origin of self-hardening
First recorded in 1900–05
Related formsself-hard·ened, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for self-hardening
This alloy, because hardened simply in air, was called “air-hardening” or “self-hardening.”Inventors at Work|George Iles