Abyssal Definition

ə-bĭsəl
adjective
Abysmal; unfathomable.
American Heritage
Of or having to do with an abyss.
Webster's New World
Of or relating to the great depths of the oceans.
American Heritage
Designating or of the ecological zone (abyssal zone) along the deep ocean floor between the bathyal and hadal zones.
Webster's New World
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).
American Heritage

Origin of Abyssal

  • First attested in the 1690's. From Medieval Latin abyssalis, from abyssus (“abyss") + -alis (“-al"). Equivalent to abyss +"Ž -al.

    From Wiktionary

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