1. The first stage of a multistage rocket
   - booster, booster rocket, takeoff booster, takeoff rocket

Derived forms: booster units

Type of: rocket, rocket engine

Part of: multistage rocket, step rocket

Encyclopedia: Booster unit

• protection
• protectionism
• protectionist
• protective
• protective coloration
• protective cover
• protective covering
• protective embankment
• protective fold
• protective garment
• protective tariff
• protectively
• protectiveness
• protector
• outstation
• outstay
• outstretch
• outstretched
• outstrip
• outstroke
• outswinger
• outtake
• outthrust
• outturn
• outvie