add-on

add-on

(ăd′ŏn′, -ôn′)n.1. One thing added as a supplement to another.2. Computers a. See plug-in.b. A hardware device, such as an expansion card, that is added to a computer to increase its capabilities.3. An additional amount or charge.

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add′-on′ adj.

add-on

n (Commerce) a feature that can be added to a standard model or package to give increased benefits

add′-on`

n. 1. a device or unit added to equipment or a construction. 2. anything added on, as a charge, tax, rider, or provision. adj. 3. provided as an add-on. [1945–50]

Thesaurus

Noun	1.	add-on - 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"addition, improveradditive - something added to enhance food or gasoline or paint or medicineafterthought - an addition that was not included in the original plan; "the garage was an afterthought"annex, annexe, wing, extension - an addition that extends a main buildingattachment - a supplementary part or accessoryconstituent, element, component - 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"elongation, extension - an addition to the length of something
	2.	add-on - a supplementary component that improves capabilityaccessory, appurtenance, supplementauto accessory - an accessory for an automobileconstituent, element, component - 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"computer accessory - an accessory for a computer; "when you add in all the computer accessories you are going to need the computer gets pretty expensive"fitting - a small and often standardized accessory to a larger systemtrimmings, fixings - the accessories that normally accompany (something or some activity); "an elaborate formal dinner with all the fixings"; "he bought a Christmas tree and trimmings to decorate it"

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