sea

noun

1. 1

   A large body of salt water.

2. 2

   A lake, especially if large or if salty or brackish.

   “The Caspian Sea, the Sea of Galilee, the Salton Sea, etc.”

3. 3

   The swell of the sea; a single wave; billow.

4. 4

   (in combination) Living or used in or on the sea; of, near, or like the sea.

   “Seaman, sea gauge, sea monster, sea horse, sea level, seaworthy, seaport, seaboard, etc.”

5. 5

   Anything resembling the vastness or turbulence of the sea.

6. 6

   A constant flux of gluons splitting into quarks, which annihilate to produce further gluons.

7. 7

   A large, dark plain of rock; a mare.

   “The Apollo 11 mission landed in the Sea of Tranquility.”

8. 8

   A very large lake of liquid hydrocarbon.