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diatreme

American  
[dahy-uh-treem] / ˈdaɪ əˌtrim /

noun

Geology.

  1. a volcanic vent produced in a solid rock structure by the explosive energy of gases in magmas.

diatreme Scientific  
/ dī′ə-trēm′ /

  1. A volcanic pipe, filled with breccia, formed by a subterranean gaseous explosion.

  2. See illustration at batholith

Etymology

Origin of diatreme

1930–35; dia- + Greek trêma hole

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.