[ dahy-as-truh-fiz-uh m ]
/ daɪˈæs trəˌfɪz əm /

noun Geology.

Also called tectonism. the action of the forces that cause the earth's crust to be deformed, producing continents, mountains, changes of level, etc.
any such resulting deformation.

Origin of diastrophism

1880–85; < Greek diastroph(ḗ) a distortion (see dia-, strophe) + -ism
Related formsdi·a·stroph·ic [dahy-uh-strof-ik, -stroh-fik] /ˌdaɪ əˈstrɒf ɪk, -ˈstroʊ fɪk/, adjectivedi·a·stroph·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for diastrophic

  • Nor was the violent volcanic and diastrophic activity in the Miocene associated with extreme climates.

    Climatic Changes|Ellsworth Huntington

British Dictionary definitions for diastrophic


/ (daɪˈæstrəˌfɪzəm) /


the process of movement and deformation of the earth's crust that gives rise to large-scale features such as continents, ocean basins, and mountainsSee also orogeny, epeirogeny
Derived Formsdiastrophic (ˌdaɪəˈstrɒfɪk), adjective

Word Origin for diastrophism

C19: from Greek diastrophē a twisting; see dia-, strophe
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