a monstrous beast, esp a sea monster any huge or powerful thing
WordReference Random House Learner's Dictionary of American English © 2026
le•vi•a•than /lɪˈvaɪəθən/USA pronunciation
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2026- a huge sea animal, as a whale.
- something of immense size or power.
le•vi•a•than
(li vī′ə thən),USA pronunciation n.
- Bible(often cap.) a sea monster.
- any huge marine animal, as the whale.
- anything of immense size and power, as a huge, oceangoing ship.
- Philosophy(cap., italics) a philosophical work (1651) by Thomas Hobbes dealing with the political organization of society.
- Late Latin leviathan
Hebrew liwyāthān - Middle English levyathan 1350–1400
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