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Dictionary Language resources

abyssal

Pronunciation: /əˈbɪs(ə)l/

Definition of abyssal

adjective

chiefly technical

relating to or denoting the depths or bed of the ocean, especially between about 3000 and 6000 metres down: the abyssal depths of the Atlantic the genera found in the abyssal North Atlantic
Geologyanother term for plutonic (sense 1).