1. throwing or dropping something from an aircraft or ship to make it lighter
Usage: nautical; aviation
2. abandoning or getting rid of something that is no longer wanted or useful

Examples

• The pilot was jettisoning fuel to reduce weight before landing.
• The ship’s crew began jettisoning cargo during the storm.
• The company is jettisoning its unprofitable divisions.
• She’s jettisoning old habits that no longer serve her.
• The spacecraft was jettisoning its booster rockets.
• They’re jettisoning the original plan in favor of a simpler approach.
• The airline is jettisoning several routes due to low demand.