superharden

verb
su·​per·​hard·​en | \ ˌsü-pər-ˈhär-dᵊn How to pronounce superharden (audio) \
superhardened; superhardening; superhardens

Definition of superharden

transitive verb

: to make (something) extremely hard … enclosed in steel cases superhardened with a proprietary technology by a company that treats jet turbine blades …— Richard Nalley superhardened missile silos

First Known Use of superharden

1874, in the meaning defined above

Keep scrolling for more

Learn More about superharden

Time Traveler for superharden

Time Traveler

The first known use of superharden was in 1874

See more words from the same year

Statistics for superharden

Cite this Entry

“Superharden.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/superharden. Accessed 8 Aug. 2020.

Comments on superharden

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

WORD OF THE DAY

Test Your Vocabulary

Original Meanings Quiz

  • rembrandt painting a young scholar and his tutor
  • Which of the following is the earliest known sense of the word awe?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

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!