1. all of space and everything in it, including stars, planets, galaxies, and all matter and energy
2. a particular sphere of activity, experience, or knowledge
3. the whole world or all people

Examples

• Scientists study the origin and structure of the universe.
• The universe contains billions of galaxies.
• She felt like the universe was conspiring against her.
• In the universe of professional sports, talent alone isn’t enough.
• The academic universe can be very competitive.
• He was the center of her universe.
• The entire universe seemed to celebrate their victory.