[ dahy-uh-treem ]
/ ˈdaɪ əˌtrim /

noun Geology.

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

Nearby words

  1. diatomaceous earth,
  2. diatomic,
  3. diatomite,
  4. diatonic,
  5. diatonicism,
  6. diatribe,
  7. diatropism,
  8. diaz,
  9. diaz-,
  10. diazepam

Origin of diatreme

1930–35; dia- + Greek trêma hole

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for diatreme

  • Most maars have low rims composed of a mixture of loose fragments of volcanic rock and rocks torn from the walls of the diatreme.

    Volcanoes|Robert I. Tilling

Science definitions for diatreme


[ dīə-trēm′ ]

A volcanic pipe, filled with breccia, formed by a subterranean gaseous explosion. See illustration at batholith.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.