Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “add-on”

add-on

noun [C]
 
 
/ˈædɒn/
something extra that is added to a product to make it better: DVDs often include bonus endings and other add-ons.an add-on to sth Many companies offer legal expenses cover as an add-on to home insurance policies. add-on parts/products/services
IT a piece of computer equipment or software that is added to a computer so that the computer can do more or different things: an add-on to sth It would require an add-on to a browser to make it all work. add-on devices/features/software
(Definition of add-on noun from the Cambridge Business English Dictionary © Cambridge University Press)
What is the pronunciation of add-on?
Add Cambridge dictionaries to your browser to your website

Definitions of “add-on” in other dictionaries

Word of the Day

beer mat

a small piece of cardboard that you put under a glass to protect a table surface in a pub or bar

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More