ADDON

Add-on

Add-ons are installable enhancements to the Mozilla Foundation's projects, and projects based on them. Add-ons allow the user to add or augment application features, use themes to their liking, and handle new types of content.

The above text is a snippet from Wikipedia: Add-on (Mozilla)
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add on

Noun

''The manufacturer sold many add ons for the basic camera.
The secretary offered a full typing and copying service for theses with the option of binding as an add on.

Verb

  1. To make an addition to something.


The above text is a snippet from Wiktionary: add on
and as such is available under the Creative Commons Attribution/Share-Alike License.

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