1. very large sea creatures or whales
Usage: biblical; literary
2. something very large and powerful, especially organizations or institutions
Usage: figurative

Examples

• The ancient sailors told stories of leviathans that could swallow entire ships.
• Blue whales are among the largest leviathans in our oceans today.
• The tech company grew into one of the corporate leviathans of the industry.
• These financial leviathans control much of the global economy.
• The novel describes leviathans rising from the depths during storms.
• Government leviathans often struggle with bureaucratic inefficiency.
• Marine biologists study the migration patterns of these ocean leviathans.