Meaning & Definition of Addition in English

1. A component that is added to something to improve it

• "The addition of a bathroom was a major improvement"

• "The addition of cinnamon improved the flavor"

2. The act of adding one thing to another

• "The addition of flowers created a pleasing effect"

• "The addition of a leap day every four years"

3. A quantity that is added

• "There was an addition to property taxes this year"

• "They recorded the cattle's gain in weight over a period of weeks"

4. Something added to what you already have

• "The librarian shelved the new accessions"

• "He was a new addition to the staff"

5. A suburban area laid out in streets and lots for a future residential area

6. The arithmetic operation of summing

• Calculating the sum of two or more numbers

• "The summation of four and three gives seven"

• "Four plus three equals seven"