On Monday, the Public Relations Society of America unveiled the three finalists for what will become the definition of "public relations." It's part of the organization's months long campaign to update the definition of the term by seeking input from the public, industry professionals, and the PRSA's partner organizations.

Recently, PR Daily publisher Mark Ragan spoke with Matthew Harrington, the president and CEO of Edelman U.S., about his definition of PR. Here's what Harrington had to say: