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Abyssal

 - 2 dictionary results

a⋅byss⋅al

[uh-bis-uhl]
–adjective
1. of or like an abyss; immeasurable; unfathomable.
2. of or pertaining to the biogeographic zone of the ocean bottom between the bathyal and hadal zones: from depths of approximately 13,000 to 21,000 ft. (4000 to 6500 m).

Origin:
1685–95; < ML abyssālis. See abyss, -al 1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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a·bys·sal   (ə-bĭs'əl)   
adj.  
  1. Abysmal; unfathomable.

  2. Of or relating to the great depths of the oceans.

  3. Of or relating to the region of the ocean bottom between the bathyal and hadal zones, from depths of approximately 3,000 to 6,000 meters (10,000 to 20,000 feet).

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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