adjective
Etymology: from past participle of mount (II)
1. archaic : piled high : heaped up
the farthest bourn of mounted eastern cloud — George Meredith
2.
a. : seated or riding on a horse : serving on horseback
mounted police
b. : provided with a means of transportation
a mounted messenger shall record the actual number of times he stops his vehicle to make a delivery — U.S. Post Office Manual
c. : performed with the aid of a means of transportation
mounted patrol
no mounted collection is needed in strictly residential territory — U.S. Post Office Manual
3. : being in working order or placed in position for firing
a completely mounted rifle
the quarter-deck guns all adrift, and not even mounted — Frederick Marryat
4.
a. : assembled or equipped for use especially by being attached to a support
tractors with mounted implements — Roy Lewis & Angus Maude
b. : prepared for display especially by being furnished with an appropriate frame or setting
mounted engraving
thousands of mounted specimens of tiger beetles — R.K.Plumb
specifically : decorated with applied ornamentation
spied the trim, brass mounted carbine of the ranger — F.V.W.Mason
c. of a gemstone : backed with enamel, foil, or dye in order to improve the color
d. : having the pipes displayed as part of the organ case or otherwise specially set up — used of a pipe-organ stop
5. : equipped with scenery, lighting, costumes, and properties
learn what she is thinking through an impressionistically mounted sound flashback — Lewis Jacobs