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Of or relating to the region of the ocean bottom between the sublittoral and abyssal zones, from depths of 200 to 4,000 meters (660 to 13,000 feet).
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Physical Geography) 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 and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈbæθ i əl)

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 ft. (200 to 4000 m).
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.bathyal - relating to ocean depths between 200 and 2000 meters (corresponds to the continental slope)
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References in periodicals archive ?
Observed on a wide range of substrates at shallow or bathyal depths and in a variety of shapes and colours (Brueggeman 1998), C.
It is the fourth zone to have distinct biological species within 3,000 meters of depth after Altiphotic, Mesophotic, and Bathyal Zone.
Diets and bathymetric distributions of two bathyal sharks of the Catalan deep Sea (western Mediterranean).
(1992) Sulfate reduction using methane in sediments beneath a bathyal "cold seep" giant clam community off Hatsushima Island, Sagami Bay, Japan.
Theeeeeeeeeere's eipelagic, mesopelagic, bathyal, and abyssalpelagic, hadipelagic, and all the rest are too deep for you and me to seeeeeeeeeee!!!!!!!" #280characters
Large Spatial Scale Variability in Bathyal Macrobenthos Abundance, Biomass, a- and b-Diversity along the Mediterranean Continental Margin.
Reproductive biology of a bathyal hermaphrodite fish, Bathypterois mediterraneus (Osteichthyes: Ipnopidae) from the south-eastern Sardinian Sea (central-western Mediterranean).
Filaments have also been interpreted as the constituent of deep water systems including shallow subtidal to bathyal settings (Zhicheng, 1997; Zhicheng et al., 1997).
The bathyal plain and the shallow sandy shelf were located only in the northeastern and southern parts of the study area.
Seasonal breeding aggregations in low-density populations of the bathyal echinoid Stylociclaris lineata.