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

Derived forms: booster rockets

Type of: rocket, rocket engine

Part of: multistage rocket, step rocket

Encyclopedia: Booster rocket

• threepenny
• threescore
• threesome
• threnode
• threnodist
• threnody
• threonine
• thresh
• thresh about
• thresher
• thresher shark
• thresher's lung
• threshing
• threshing floor
• threshing machine
• threshold
• threshold element
• threshold function
• threshold gate
• threshold level
• threshold operation
• satirise
• satirist
• satirize
• satisfaction