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diastem

American

[dahy-uh-stem] / ˈdaɪ əˌstɛm /

noun

Geology.

a minor hiatus in an orderly succession of sedimentary rocks.

Other Word Forms

diastemic adjective

Etymology

Origin of diastem

1850–55; < Greek diástēma interval; diastema

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.