Definitions

1. noun

A type of rocket engine that uses two different propellants, typically stored separately and combined at the moment of combustion.

“The new space agency will be using a bipropellant engine to power its upcoming satellite launch.”

2. noun

A fuel system in which two or more different fuels are used in combination to produce thrust.

“The rocket’s bipropellant system allowed it to achieve higher speeds and greater maneuverability.”