abyssal

As an adjective abyssal

is (archaic) belonging to, or resembling, an abyss; unfathomable .

As a proper noun bassalia is

the supposed realm of the deep sea.

As an adjective abyssal

is (archaic) belonging to, or resembling, an abyss; unfathomable .

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

As an adjective abyssal

is (archaic) belonging to, or resembling, an abyss; unfathomable .

As a noun arrow is

a projectile consisting of a shaft, a point and a tail with stabilizing fins that is shot from a bow.

As a verb arrow is

to move swiftly and directly (like an arrow).

As a contraction arrow is

(obsolete).

As a noun zooplankton

is zooplankton.

As an adjective abyssal is

(archaic) belonging to, or resembling, an abyss; unfathomable .

As an adjective abyssal is

(archaic) belonging to, or resembling, an abyss; unfathomable .

Abyssmal is likely misspelled.

Abyssmal has no English definition.

As an adjective abyssal

is belonging to, or resembling, an abyss; unfathomable.

As adjectives the difference between abyssal and dismal

is that abyssal is belonging to, or resembling, an abyss; unfathomable while dismal is disappointingly inadequate.

As adjectives the difference between pelagic and abyssal

is that pelagic is (biology) living in the open sea rather than in coastal or inland waters while abyssal is (archaic) belonging to, or resembling, an abyss; unfathomable .

As adjectives the difference between benthic and abyssal

is that benthic is pertaining to the benthos; living on the seafloor, as opposed to floating in the ocean while abyssal is belonging to, or resembling, an abyss; unfathomable.