leviathan (noun):
- : (as Leviathan) a powerful sea creature mentioned in the Old Testament; a fearsome sea monster or serpent that breathes fire. Thus, by description, possibly a dragon.
- : any large sea creature.
- : something very large or powerful of its kind, and difficult to control.
Old Testament references to a huge sea monster called Leviathan are thought to have been inspired by ancient myth. Leviathan appears in the Book of Isaiah and Book of Psalms as a sea serpent that is killed by God and then given as food to creatures in the wilderness, and it is also mentioned in the Book of Job.
Since the 1300s, the word began to be used (both capitalised and capitalised) for enormous sea creatures both imagined and real—and it was used as a synonym for the whale countless times in Herman Melville’s classic Moby-Dick, as in “ere the Pequod’s weedy hull rolls side by side with the barnacled hulls of the leviathan.”
Today, the word can be used for anything large and powerful, from ships to corporations.









