noun “sea”
singular sea, plural seas or uncountable
- a large body of saltwater smaller than an ocean, often connected to an ocean or another sea
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We spent our summer vacation sailing across the calm waters of the Aegean Sea.
- a metaphor for something immense or turbulent
After the concert tickets went on sale, the crowd outside the venue quickly became a sea of eager fans.
- in astronomy or planetary science, a vast, flat area of basaltic rock on the moon or a planet
The lunar rover traversed the vast expanse of the Sea of Serenity, its wheels kicking up dust on the moon's surface.
adjective “sea”
base form sea, non-gradable
- related to, located in, or characteristic of the sea
The sea captain has spent more than thirty years navigating the ocean's treacherous waves.