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deep-sea core

American  
[deep-see] / ˈdipˌsi /

noun

Oceanography.

  1. an intact sample of sediment extracted from the ocean floor by drilling with a long hollow tube.

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.