Impelling, throwing, driving, or shooting forward: as, a projectile force.Caused by impulse; impelled or driven forward.In zoology, capable of being thrust forward or protruded, as the jaws of a fish; protrusile.n. A body projected, or impelled forward by force, particularly through the air.n. Specifically, a missile intended to be projected from a cannon by the explosive force of gunpowder or some similar agent.