Definition of "three-party" [three-party]

• Involving three parties or elements (adjective)

WordNet. Princeton University. 2010.

• "For if even a minority Conservative government can be formed, there may be three-party agreement to launch corruption inquiries that go far beyond the scope of the Gomery Commission."
• "The point is that voters will be given (a little) more than the current (barely indistinguishable) two- or three-party option."
• "A three-party system would absolutely change the dynamic in American politics."