case-harden

verb
case-hard·en | \ˈkās-ˌhär-dᵊn \
case-hardened; case-hardening; case-hardens

Definition of case-harden 

transitive verb

1 : to harden (a ferrous alloy) so that the surface layer is harder than the interior

2 : to make callous or insensible

Other Words from case-harden

case-hardened adjective

First Known Use of case-harden

1677, in the meaning defined at sense 1

Keep scrolling for more

Learn More about case-harden

Share case-harden

Listen to Our Podcast about case-harden

Statistics for case-harden

Look-up Popularity

Time Traveler for case-harden

The first known use of case-harden was in 1677

See more words from the same year

More from Merriam-Webster on case-harden

See words that rhyme with case-harden

Comments on case-harden

What made you want to look up case-harden? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

evasion of direct action or statement

Get Word of the Day daily email!

Test Your Vocabulary

Great Scrabble Words—A Quiz

  • scrabble-tiles-that-read-scrabble-quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!