Hundreds of slang words -- including terms popular in the online world like "retweet" -- have been added to the Concise Oxford English Dictionary.

The company released the 12th and centenary edition of the popular dictionary on Thursday. New terms among the edition's 240,000 entries include "retweet," meaning to repost a message on the social networking site Twitter; "sexting," or sending lewd messages or photographs via cell phone; and "cyberbullying," meaning to use electronic communications to intimidate or torment someone.

The new edition is being released months after Oxford University Press added texting terms such as "OMG," "LOL," and "<3" to its online lexicon.

Other quirky entries to grace the dictionary's pages for the first time include "mankini" (a one-piece bathing suit for men), the triumphal expression "woot" and "Jeggings," a word for women's stretchy jeans.

The new entries were chosen from a database of two billion words scraped from the Internet. Those terms found to be most widely used were added to the latest edition, The Telegraph newspaper reported.

"These additions are just carrying on the tradition of a dictionary that has always sought to be progressive and up to date," the company said in a statement on its website.

The 12th edition is being sold alongside a limited-edition reprint of the first edition, which was published in 1911. Back then, cutting-edge words included "motorist," "aeroplane," "rag-time" and "kinematograph," meaning a machine that played motion pictures.

At the time, editors Henry and Frank Fowler said that they would "admit colloquial, facetious, slang, and vulgar expressions with freedom, merely attaching a cautionary label."

The 1911 edition was made up of far fewer words than its present-day counterpart, Angus Stevenson, one of the editor's of the 12th edition, told Britain's Daily Mail newspaper.

But the two versions share a few things in common.

"Some of the subjects you find endlessly now, as well as then, are new technology, slang and colloquial language," Stevenson said.