What is another word for booster rocket?
Pronunciation: [bˈuːstə ɹˈɒkɪt] (IPA) 
Booster rocket is a term used to refer to a rocket or a rocket engine that provides extra thrust to launch a spacecraft into space. There are several synonyms for the word booster rocket, including booster, rocket booster, solid rocket booster, and strap-on booster. Booster is a general term used to describe rocket engines that provide additional thrust to a primary rocket engine, whereas a rocket booster is a rocket engine that enhances the power of a primary rocket. The solid rocket booster is a rocket engine that uses solid fuel to generate thrust, while a strap-on booster is a rocket engine that attaches to the outer surface of a primary rocket to enhance its power.
