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Showing results for deep-sea. Search instead for deep-asleep.
Synonyms

deep-sea

American  
[deep-see] / ˈdipˈsi /

adjective

  1. of, pertaining to, in, or associated with the deeper parts of the sea.

    deep-sea fishing; deep-sea diver.


deep-sea British  

noun

  1. (modifier) of, found in, or characteristic of the deep parts of the sea

    deep-sea fishing

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of deep-sea

First recorded in 1620–30

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The data included carbon isotope records, measurements of phosphorus accumulation in deep-sea sediments, and a newer iodine-to-calcium method for reconstructing ancient ocean oxygen levels.

From Science Daily Jul. 16, 2026

In April 2022, the senior military officers say, they approached her through a member of their unit who was a hobby deep-sea diver.

From The Wall Street Journal Jun. 12, 2026

It was known that when whales die and drop to the seafloor, their sunken bodies -- called "whale falls" -- provide a source of food to deep-sea creatures.

From Barron's Jun. 10, 2026

The black box was found after months of deep-sea searches in 2011.

From BBC May 21, 2026

The substance inside was made from the dried and crushed bodies of luminous deep-sea fishes.

From "Six of Crows" by Leigh Bardugo

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