- living or found near or in the deepest part of a body of water.
- sinking to or deposited on the bottom of a body of water.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- living or occurring on the bottom of a sea or a lakedemersal fish
Word Origin for demersal
C19: from Latin dēmersus submerged (from dēmergere to plunge into, from mergere to dip) + -al 1
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