abyssal hill


: any of the numerous relatively low elevations arising from the ocean floor
Low abyssal hills (less than 1 kilometer above the surrounding ocean bottom) cover about 80% of the Pacific floor and about half of the Atlantic.M. Grant Gross, Oceanography 5th Edition, 1990
compare abyssal plain, seamount

Word History

First Known Use

1960, in the meaning defined above

Time Traveler
The first known use of abyssal hill was in 1960

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Dictionary Entries Near abyssal hill

Cite this Entry

“Abyssal hill.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/abyssal%20hill. Accessed 20 May. 2024.

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