add-onnoun [ C ]
uk/ˈæd.ɒn/us/ˈæd.ɑːn/a piece of equipment that can be connected to a computer to give it an extra use:
A printer is a useful add-on.
an extra part that is added, especially to an officially organized plan, system, agreement, etc.:
Legal expenses cover is often sold as an add-on to household insurance policies.
Thesaurus: synonyms and related words
Computer hardware
- 3-D printer
- blackberry
- brick
- bubblejet
- codec
- handheld
- joypad
- Macintosh
- micro
- microcomputer
- motherboard
- mouse
- ram
- shift key
- tablet
- toggle
- trackball
- underscore
- VDT
- word processor
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You can also find related words, phrases, and synonyms in the topics:
Things added or attached to other things