It's always fun to see lists of the new words the major dictionary companies accept each year and add to their dictionaries. The words are a great reflection of our changing world, new trends, new ideas.
Here are a couple of the 150 that got added to Merriam-Webster's College Dictionary this year. Actually, I'm rather surprised they didn't get in sooner.
bromance: a close nonsexual friendship between men.
cougar: a middle-aged woman seeking a romantic relationship with a younger man.
crowdsourcing: the practice of obtaining needed services, ideas, or content by soliciting contributions from a large group of people and especially from the online community rather than from traditional employees or suppliers.
social media: forms of electronic communication (as Web sites for social networking and microblogging) through which users create online communities to share information, ideas, personal messages, and other content (as videos).
tweet: a post made on the Twitter online message service.
See the Publishers Weekly blog for a longer article and list: