addition
Nouns
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(n) 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
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(n) 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
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(n) 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
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(n) something added to what you already have
- the librarian shelved the new accessions
- he was a new addition to the staff
- (n) a suburban area laid out in streets and lots for a future residential area
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(n) 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