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penecontemporaneous

American  
[pee-nee-kuhn-tem-puh-rey-nee-uhs] / ˌpi ni kənˌtɛm pəˈreɪ ni əs /

adjective

Geology.

  1. formed during or shortly after the formation of the containing rock stratum.

    penecontemporaneous minerals.

Etymology

Origin of penecontemporaneous

First recorded in 1900–05; pene- + contemporaneous

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.