Part of speech: Noun
the act of dismounting (a horse or bike etc.)
Categories: Discontinuance, Discontinuation
The word "dismount" comes from Old French desmonter.
dis – A related word in the same word family.
mount – A related word in the same word family.
English has both Germanic and French words for the same things—'begin' vs 'commence', 'help' vs 'assist'.