Hashtag, selfie, and tweep join over 150 new words and definitions added to Merriam-Webster's Collegiate Dictionary in 2014.
Other additions include crowdfunding joins big data and gamification.
In the area of more intimate relationships, catfish, a technology-related term, refers to a person who sets up a false social networking profile for deceptive purposes. Catfish was popularized by the documentary and television series of the same name and by last year's strange story of football player Manti Te'o's nonexistent girlfriend.
"So many of these new words show the impact of online connectivity to our lives and livelihoods," explains Peter Sokolowski, Editor-at-Large for Merriam-Webster. "Tweep, selfie, and hashtag refer to the ways we communicate and share as individuals. Words like crowdfunding, gamification, and big data show that the Internet has changed business in profound ways."