1. a very large body of salt water that covers most of the earth’s surface
2. one of the five main divisions of this body of water (Atlantic, Pacific, Indian, Arctic, Antarctic)
3. a very large amount or quantity of something
Usage: figurative

Examples

• The Pacific Ocean is the largest ocean in the world.
• We could see the ocean from our hotel room window.
• Ships cross the Atlantic Ocean regularly.
• The ocean waves crashed against the rocky shore.
• Marine biologists study life in the ocean depths.
• She felt an ocean of sadness wash over her.
• There’s an ocean of difference between the two proposals.