(lə·vī′ə·thən) noun
1. A large aquatic but unidentified animal mentioned in the Scriptures: possibly a crocodile or other large reptile (Job xli 1), a serpent (Isa. xxvii 1), or a whale (Ps. civ 26).
2. Hence, any large animal, as a whale.
3. By extension, something huge and colossal, as a ship of unusual size. [<LL <Hebrew liwyāthān]

(lə·vī′ə·thən)
The title of a work by Thomas Hobbes which develops the analogy between the human body and human society and expounds the monarchic principle; hence, the political organism; the state.