addition

a component that is added to something to improve it

• “the addition of a bathroom was a major improvement”
• “the addition of cinammon improved the flavor”

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”

a quantity that is added

• “there was an addition to property taxes this year”
• “they recorded the cattle”

something added to what you already have

• “the librarian shelved the new accessions”
• “he was a new addition to the staff”

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

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”