Extension Richard Updated September 28, 2017 17:16 Follow A computer program that extends the functionality of a web browser in some manner. Comments 2 comments Sort by Date Votes Timothy Lynch November 30, 2016 21:18 Please note typo "Extenstion". 0 Permalink Richard November 30, 2016 21:30 Many thanks Timothy for pointing out this typo! We've made the change. Thanks again. Always feel free to share any comments you may have. Should you have any Feature Requests, those would be submitted via our Community Portal. 0 Permalink Please sign in to leave a comment.