Ma*jor"i*ty (?), n.; pl. Majorities (#). [F. majorité. See Major.] 1. The quality or condition of being major or greater; superiority. Specifically: (a) The military rank of a major. (b) The condition of being of full age, or authorized by law to manage one's own affairs.

2. The greater number; more than half; as, a majority of mankind; a majority of the votes cast.

3. [Cf. L. majores.] Ancestors; ancestry. [Obs.]

4. The amount or number by which one aggregate exceeds all other aggregates with which it is contrasted; especially, the number by which the votes for a successful candidate exceed those for all other candidates; as, he is elected by a majority of five hundred votes. See Plurality.

• More than half (50%) of some group
        The majority agreed that the new proposal was the best.
  
• The difference between the winning vote and the rest of the votes
        "the winner with 53% had a 6% majority over the loser with 47%".
  
• (dated) Legal adulthood
        By the time I reached my majority, I had already been around the world twice.