Blending involves taking two or more words, removing parts of each, and joining the residues together to create a new word whose form and meaning are taken from the source words. Smog derives from smoke and fog and means a combination of these two substances (and probably lots of others); motel derives from motor and hotel and refers to hotels that are con- venient in various ways to motorists; Prevacid derives from prevent acid; era- cism derives from erase and racism and means erase racism or, if read against the grain, electronic racism (cf. email, ecommerce, E-trade); webinar derives from (worldwide) web and seminar. In November 2007, an interviewee on an NPR news item created the blend snolo to refer to playing bike polo in the snow.