[ heyd-l ]
/ ˈheɪd l /
Save This Word!
of or relating to the greatest ocean depths, below approximately 20,000 feet (6,500 meters).
of or relating to the biogeographic region of the ocean bottom below the abyssal zone.
THINK YOU’VE GOT A HANDLE ON THIS US STATE NICKNAME QUIZ?
Did you ever collect all those state quarters? Put them to good use on this quiz about curious state monikers and the facts around them.
Question 1 of 8
Mississippi’s nickname comes from the magnificent trees that grow there. What is it?
Words nearby hadal
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
British Dictionary definitions for hadal
/ (ˈheɪdəl) /
of, relating to, or constituting the zones of the oceans deeper than abyssal: below about 6000 metres (18 000 ft)See also abyssal
Word Origin for hadal
C20: from French, from Hadés Hades
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for hadal
[ hād′l ]
Relating to the deepest regions of the ocean, below about 6,000 m (19,680 ft). The hadal zone mostly comprises trenches that can reach depths greater than 10,000 m (32,800 ft).
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.