The social networking site Twitter, popular with celebs like Britney Spears and Stephen Fry, has been added to the English dictionary

Collins English Dictionary have announced the word will gain the new meaning both as a noun and a verb in the 30th anniversary edition of their book.

As a noun Twitter is'a website where people can post short messages about their current activities'

As a verb its definition is 'to twitter, meaning to write short messages on the Twitter website'.

The words "Twitterati" and "Twitterverse" will also be added ... but it is not thought the entry for "Twit" will be changed to mean someone who uses Twitter all the time.