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superharden

American  
[soo-per-hahr-dn] / ˌsu pərˈhɑr dn /

verb (used with object)

Military.

  1. harden.

Etymology

Origin of superharden

super- + harden

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.