addition -
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"
component,
constituent,
element an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system; "spare components for cars"; "a component or constituent element of a system"
additive something added to enhance food or gasoline or paint or medicine
afterthought an addition that was not included in the original plan; "the garage was an afterthought"
attachment the act of attaching or affixing something
addition -
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"
subtraction,
deduction the act of subtracting (removing a part from the whole); "he complained about the subtraction of money from their paychecks"
step-up,
increase the act of increasing something; "he gave me an increase in salary"
retrofit the act of adding a component or accessory to something that did not have it when it was manufactured; "the court ordered a retrofit on all automobiles"
addition -
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"
addition -
a suburban area laid out in streets and lots for a future residential area
addition -
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"
Addition is a mathematical operation that represents combining collections of objects together into a larger collection. It is signified by the plus sign (+). For example, in the picture on the right, there are 3 + 2 apples—meaning three apples and two other apples—which is the same as five apples.
OmegaWiki Dictionary
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addition (arithmetic) the mathematical operation of increasing one amount by another. The result of adding two quantities is their sum.
