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1. Abysmal; unfathomable.
2. Of or relating to the great depths of the oceans.
3. Of or relating to the region of the ocean bottom between the bathyal and hadal zones, from depths of approximately 2,000 to 6,000 meters (6,500 to 20,000 feet).


1. (Physical Geography) of or belonging to the ocean depths, esp below 2000 metres (6500 feet): abyssal zone.
2. (Geological Science) geology another word for plutonic


(əˈbɪs əl)

1. of or like an abyss; immeasurable; unfathomable.
2. 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).
[1685–95; < Medieval Latin]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.abyssal - relating to ocean depths from 2000 to 5000 metersabyssal - relating to ocean depths from 2000 to 5000 meters
2.abyssal - resembling an abyss in depth; so deep as to be unmeasurable; "the abyssal depths of the ocean"
deep - having great spatial extension or penetration downward or inward from an outer surface or backward or laterally or outward from a center; sometimes used in combination; "a deep well"; "a deep dive"; "deep water"; "a deep casserole"; "a deep gash"; "deep massage"; "deep pressure receptors in muscles"; "deep shelves"; "a deep closet"; "surrounded by a deep yard"; "hit the ball to deep center field"; "in deep space"; "waist-deep"


References in periodicals archive ?
Manager of the Australian National Fish Collection, Alastair Graham, said Australia has a vast marine estate to manage and some areas, such as the abyssal depths, are largely unexplored.
Museums Victoria ichthyologist Martin Gomon said the gathering in Hobart was the first systematic attempt to examine life at abyssal zone depths anywhere along Australia's vast coastline.
Et de preciser qu'il existe un hiatus abyssal entre les rapports d'inspection et le cahier des charges.
The abyssal line forms part of Boaventura's epistemological and political proposal, which helps understand how modernity, under the triple domination of capitalism, colonialism, and patriarchy, excludes people from the condition of being human, holding rights, and possessing knowledge.
Thanks to solid cinematography, the underwater scenes are at least compelling in their abyssal murkiness.
Meanwhile, unveiling new characters during the annual esports tournament has been an ongoing tradition for Valve, as TI6 featured the debut of the Abyssal Underlord last year.
Deja abyssal, le solde de la balance commerciale a accentue son deficit durant les sept premiers mois de l'annee 2017culminant a 8628 MD, contre 6856,3 MD durant la meme periode de 2016.
In "DEV-OCEAN" we journey below the waves and see the action firsthand in an emotional jaunt taking us into the deepest abyssal recesses or a super real reef drama and become part of their world for a while in moments of time that would change their lives.
Although she has "bigger fish to fry", in view of the tense relations with the IMF, the abyssal deficit of the trade balance (2.
The shallower depths near the continental margins - which are also home to the dazzling, but dwindling, diversity of coral reefs - "are likely to experience a greater degree of change in all environmental parameters" compared to abyssal depths - between 3,000 and 6,000 meters - the paper said.
It is up to us all to engage our enduring border-waters on an ever more profound level, setting out from the shallow breakers along our beaches to enter (and account for) abyssal depths aflow with the bones and memorials of those who went there ahead of us.