Twelfth Amendment: Meaning and Definition of

Twelfth' Amend'ment

Pronunciation: [key]
  1. an amendment to the U.S. Constitution, ratified in 1804, providing for election of the president and vice president by the electoral college: should there be no majority vote for one person, the House of Representatives (one vote per state) chooses the president and the Senate the vice president.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.