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microtektite

American

[mahy-kroh-tek-tahyt] / ˌmaɪ kroʊˈtɛk taɪt /

noun

Geology.

a microscopic tektite found in ocean sediments and polar ice.

Etymology

Origin of microtektite

First recorded in 1965–70; micro- + tektite

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.