
1) Davy jones 2) Extremely deep 3) Immeasurable 4) Like a chasm 5) Ocean bottom 6) Ocean floor 7) Of or like an abyss 8) Of the deep-sea floor 9) Resembling an abyss in depth 10) Sea bottom 11) Seabed 12) So deep as to be unmeasurable 13) Unfathomable
Found on
https://www.crosswordclues.com/clue/abyssal

• (a.) Belonging to, or resembling, an abyss; unfathomable.
Found on
http://thinkexist.com/dictionary/meaning/abyssal/
[Adjective] Extremely deep.
Example: The sea creature lives at the bottom of the sea bed, in an abyssal environment.
Found on
http://www.bbc.co.uk/skillswise/glossary/

ocean depths greater than 4000 meters. The floor of the deep ocean, from 4000-6000 meters, is called the abyssal plain.
Found on
http://www.coml.org/edu/glossary/g1.htm

Belonging to, or resembling, an abyss; unfathomable. ... <physics> Abyssal zone, one of the belts or zones into which Sir E. Forbes divides the bottom of the sea in describing its plants, animals, etc. It is the one furthest from the shore, embracing all beyond one hundred fathoms deep. Hence, abyssal animals, plants, etc. ... Origin: Cf. Aby...
Found on
http://www.encyclo.co.uk/local/20973

of or relating to the bottom waters of the ocean.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
A·byss'al adjective [ Confer
Abysmal .] Belonging to, or resembling, an abyss; unfathomable.
Abyssal zone (Physics Geology) ,
one of the belts or zones into which Sir E. Forbes divides the bottom of the sea in describing its plants, animals, etc. It is the one furthest from th...
Found on http://www.encyclo.co.uk/webster/A/11
Pertaining to the great depths of the oceans, generally 2000 m (1000 fathoms) or more below sea level.
Found on http://www.evcforum.net/WebPages/Glossary_Geology.html
Abyssal refers to animals that live in great depths of the sea.
Found on http://www.probertencyclopaedia.com/browse/BA.HTM
(Gk: a=not; byssos=depth; plumbless depth) living between 4000-6000m, the abyssal zone. eco04.gif.
Found on http://www.seafriends.org.nz/books/glossary.htm
[adj] - relating to ocean depths from 2000 to 5000 meters
Found on http://www.webdictionary.co.uk/definition.php?query=abyssal
abyssal 1. Of or inhabiting the depths of the ocean to which light does not penetrate; unfathomable. 2. In oceanography, of or relating to the deepest regions of the ocean and the organisms inhabiting that environment; at depths between 4 000 and 6 000 meters.
Found on http://www.wordinfo.info/words/index/info/view_unit/4/
adjective relating to ocean depths from 2000 to 5000 meters
Found on https://www.encyclo.co.uk/local/20974
of or like an abyss; immeasurable; unfathomable. · 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).
Found on https://www.infoplease.com/dictionary/abyssal
No exact match found.