propellent

Noun	1.	propellent - something that propels Synonyms: propellant
Adj.	1.	propellent - tending to or capable of propelling; "propellant fuel for submarines"; "the faster a jet plane goes the greater its propulsive efficiency"; "universities...the seats of propulsive thought" Synonyms: propellant, propelling, propulsive

dynamic, dynamical, propellant, propelling, propulsive