I. dəs, (ˈ)dis+ verb
Etymology: probably modification (influenced by dis- & mount ) of Middle French desmonter, from des- dis- (I) + monter to mount — more at mount
intransitive verb
1. obsolete : to come down : descend
2. : to alight from or as if from a horse
I preferred to dismount to ease the horse's burden — Ana Beker
I took a taxi to within a third of a mile of the stadium, dismounting when my vehicle could no longer advance — A.J.Liebling
transitive verb
1.
a. : to remove often forcibly from a mount or a mounting or something felt to resemble one of these
enabling the dismounted motorist to reach his urban destination by swift public transport — Lewis Mumford
especially : unhorse
I should like to dismount my men … and send the horses to the rear — Oliver La Farge
b. obsolete : to bring or force down from a height ; also : to deprive of honor or authority : degrade
2. archaic : to alight from (as a horse)
3. : to take down or apart from an assembled condition : disassemble
dismount a revolver for cleaning
Synonyms: see descend
II. noun
: the act of dismounting ; specifically : movement to the floor from a position on a gymnastics apparatus