hadal Hear it!

hadal definition

ha·dal (hād′'l)

adjective

designating or of the ecological zone (hadal zone) of the ocean floor trenches below c. 3,300 fathoms (c. 6,000 m)

Etymology: Fr < Hadès, Hades + -al, -al

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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