The Collaborative International Dictionary
Demountable \De*mount"a*ble\, [See De-; Mount.] Capable of being dismounted; -- said of a form of rim, for an automobile wheel, which can be removed with its tire from the wheel.
Wiktionary
a. 1 Able to be removed from its mount; designed to be dismantled; detachable; portable. 2 (context computing of a hard drive dated English) Designed to be removed from the read mechanism.
Usage examples of "demountable".
Building it, assembling it at Camp Alpha and hauling it on demountable wheels across more than ten kilometres of plain had absorbed the crew's entire energies for several days.
Maybe Bang-Bang, (bleep) him, had gotten her a demountable sniper rifle.
The tyres had demountable rims and only rarely did Brian have to patch a tyre beside the road.
Whereupon Amerind steel workers sawed apart a robot hull that was no longer a fuel tank because its fuel was gone, and they built a demountable solar mirror some sixty feet across—which African mechanics deftly powered—and suddenly there was a spot of incandescence even brighter than the sun of Xosa II, down on the planet's surface.