bat hyal

bathyal

[bath-ee-uhl]
adjective Oceanography.
of or pertaining to the biogeographic region of the ocean bottom between the sublittoral and abyssal zones: from depths of approximately 660 to 13,000 feet (200 to 4000 meters).

Origin:
1925–30; bathy- + -al1

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Collins
World English Dictionary
bathyal (ˈbæθɪəl)
 
adj
denoting or relating to an ocean depth of between 200 and 2000 metres (about 100 and 1000 fathoms), corresponding to the continental slope

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
bathyal   (bāth'ē-əl)  Pronunciation Key 
Relating to the region of the ocean bottom between the sublittoral and abyssal zones, from depths of approximately 200 to 2,000 m (656 to 6,560 ft).
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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