add-on ( d  n , -ôn)n. 1. One thing added as a supplement to another. 2. Computer Science a. See add-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. add -on adj. |
add-on
Noun
a feature that can be added to a standard model to give increased benefits
ThesaurusLegend: Synonyms Related Words Antonyms
| 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"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 - a supplementary part or accessory constituent, 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 capability auto accessory - an accessory for an automobile constituent, 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 system |
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