1. A forceful emergence from a restrictive condition or situation.

2. A sudden manifestation or increase, as of a disease; an outbreak.

3. A sudden or dramatic improvement or increase in popularity: "Now grown on a small scale in several arid regions, this crop seems poised for a major breakout" (Noel Vietmeyer).

4. A breakdown of statistical data.

5. Sports A play, as in hockey, in which the defending team moves the puck out of its defensive zone, especially by passing, to begin an offensive play.

1. Characterized by a sudden significant improvement or increase in popularity: a ballplayer having a breakout season; a band with a breakout album.

2. Conducted separately from a larger group or meeting: attended several breakout sessions at the conference.