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add-on

add-on

 
pronunciation:
aed an
features:
Word Combinations (noun)
part of speech: noun
definition 1: an optional item that may be bought in addition to a main item to supplement or improve it.
definition 2: in computing, a supplementary program or piece of code written to alter, enhance, or extend the behavior of a main program.
The word processor has an add-on for the visually impaired.
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