THE social networking website Facebook has made it into the dictionary.

The site's soaring popularity has won its inclusion in the 2008 edition of the Collins English Dictionary, according to a Collins spokeswoman.

Editors have defined the term as both a trademarked noun referring to "a popular social networking website", and as a verb, meaning "to search for (a person's profile) on the Facebook website".

The dictionary gives as an example of the word's usage: "I thought one of the interviewees was perfect for the job, until I Facebooked him."

The spokeswoman said: "'Facebook' has been the phenomenon of 2007."Though social networking has been around for several years, this year has seen it break into the mainstream, with 200,000 signing up every day."