ha·​dal | \ ˈhā-dᵊl How to pronounce hadal (audio) \

Definition of hadal

: of, relating to, or being the parts of the ocean below 6000 meters (about 20,000 feet)

Examples of hadal in a Sentence

Recent Examples on the Web No other system could so precisely map hadal depths. Ben Taub, The New Yorker, "Thirty-six Thousand Feet," 10 May 2020 Life at the extremes Welcome to the hadal zone: the deepest part of the ocean. Eva Botkin-kowacki, The Christian Science Monitor, "NASA eyes the ocean: How the deep sea could unlock outer space," 23 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hadal.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of hadal

1959, in the meaning defined above

History and Etymology for hadal

French, from Hadès Hades

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Time Traveler for hadal

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The first known use of hadal was in 1959

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Statistics for hadal

Last Updated

22 May 2020

Cite this Entry

“Hadal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hadal. Accessed 3 Jul. 2020.

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