Try Our Apps


Supposedly vs. Supposably


[dahy-uh-peer] /ˈdaɪ əˌpɪər/
noun, Geology
a dome, or anticline, the upper regions of which have been ruptured and penetrated by material squeezed up from below.
Compare plume (def 10), salt dome.
Origin of diapir
1915-20; < French, said to be < Greek diapeírein to drive through, pierce; dia- dia- + peírein to pierce
Related forms
[dahy-uh-pir-ik] /ˌdaɪ əˈpɪr ɪk/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
British Dictionary definitions for diapir


(geology) an anticlinal fold in which the brittle overlying rock has been pierced by material, such as salt, from beneath
Word Origin
C20: from Greek diapeirainein to make holes through, pierce
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
diapir in Science
A fold or dome, such as an anticline, in which the upper strata of sediment or rock have been ruptured by the upward movement of more plastic rock, such as a body of salt, gypsum, or lava.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for diapir

Few English speakers likely know this word

Word Value for diapir

Scrabble Words With Friends