addition - Definition | Dictionary definition of addition

Definition of 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"

Types:: show 9 types...; hide 9 types...; additive
something added to enhance food or gasoline or paint or medicine; adjuvant
an additive that enhances the effectiveness of medical treatment; artificial additive, food additive
an additive to food intended to improve its flavor or appearance or shelf-life; afterthought
an addition that was not included in the original plan; annex, annexe, extension, wing
an addition that extends a main building; ell
an extension at the end and at right angles to the main building; attachment
a supplementary part or accessory; hood, lens hood
a tubular attachment used to keep stray light out of the lens of a camera; elongation, extension
an addition to the length of something

Type of:: 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

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"

Antonyms:: subtraction
the act of subtracting (removing a part from the whole); deduction; show more antonyms...

Types:: retrofit
the act of adding a component or accessory to something that did not have it when it was manufactured; fluoridation, fluoridisation, fluoridization
the addition of a fluoride to the water supply (to prevent dental decay)