di·​a·​pir | \ ˈdī-ə-ˌpir How to pronounce diapir (audio) \

Definition of diapir

: an anticlinal fold in which a mobile core has broken through brittle overlying rocks

Other Words from diapir

diapiric \ ˌdī-​ə-​ˈpir-​ik How to pronounce diapiric (audio) \ adjective

First Known Use of diapir

1918, in the meaning defined above

History and Etymology for diapir

French, probably from Greek diapeirein to drive through, from dia- + peirein to pierce; akin to Greek poros passage — more at fare

Keep scrolling for more

Learn More about diapir

Time Traveler for diapir

Time Traveler

The first known use of diapir was in 1918

See more words from the same year

Statistics for diapir

Cite this Entry

“Diapir.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diapir. Accessed 20 Sep. 2020.

More from Merriam-Webster on diapir

Britannica.com: Encyclopedia article about diapir

Comments on diapir

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


Test Your Vocabulary

Homophone Quiz

  • three bears two of them look like theyre whispering to a third bear who looks chuffed to be the center of attention
  • In order to judge how people felt, the senator's office hired a firm to take a ______.
Spell It

Can you spell these 10 commonly misspelled words?

Syn City

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

Love words? Need even more definitions?

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