1. to throw or drop something from a ship, aircraft, or spacecraft to make it lighter
Usage: nautical; aviation
2. to get rid of something that is no longer wanted or needed

1. the act of jettisoning something, especially cargo from a ship or aircraft
Usage: nautical; aviation

Examples

• The pilot had to jettison fuel before making an emergency landing.
• The ship’s crew jettisoned cargo to prevent sinking in the storm.
• The company decided to jettison its unprofitable division.
• She jettisoned her old beliefs and adopted a new philosophy.
• The spacecraft performed a successful jettison of its booster rockets.
• They had to jettison their original plan due to budget constraints.
• The airline jettisoned several routes to cut costs.