1. the process of adding numbers together
Usage: mathematics
2. something that is added
3. the act of adding something

Examples

• The addition of 5 and 3 equals 8.
• She practiced addition problems for her math test.
• The new deck is a beautiful addition to our house.
• The addition of salt improved the flavor.
• In addition to English, he speaks Spanish fluently.
• The restaurant’s latest addition to the menu is very popular.
• Simple addition and subtraction are basic math skills.