propellant

IPA: prʌpˈɛɫʌnt

anything that propels
fuel, oxidizer, reaction mass or mixture for one or more engines (especially internal combustion engines or jet engines) that is carried within a vehicle prior to use
the compressed gas in a pressurised container (especially an aerosol can) that is used to expel its content
the explosive (cordite, gunpowder, etc) found in ammunition cartridges

Examples of "propellant" in Sentences

The term “solid” in the title refers to the propellant, which has the consistency of hard rubber.
In a flash, the primer ignites the propellant, which is converted at nearly explosive speeds to gases.
For nearly all spacecraft, the propulsion system, including the propellant, is a major fraction of the spacecraft.
The cost in propellant to go from one crater to another, as long as we stay on the same pole, is very small, almost negligible.
A modest fuel depot in orbit based upon existing upper stages would allow for the separation of propellant from the payload, and allow for easy segmentation of the total mass of a lunar launch.
It’s just a small fission reactor where instead of using the steam to drive a turbine for electricity, you run it through a rocket nozzle to provide thrust (the propellant is usually hydrogen instead of water).
But another propellant was a constellation of doctrines — about capitalism's "contradictions," "market failures" and the need for socialism, or at least "planning" through government control of the economy's "commanding heights."