adware
(ˈædˌwɛə) n1. (Computer Science) a type of computer software that collects information about a user's browsing patterns in order to display relevant advertisements in his or her Web browser
2. (Computer Science) computer software that is given to a user with advertisements already embedded
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014