The correct spelling of "dis mounts" is "dismounts", pronounced /dɪsˈmaʊnts/. The word is derived from the prefix "dis-" which means "to reverse or negate" and the verb "mount" which means "to climb or ascend". When "dis-" is added to "mount", it creates the opposite meaning of climbing down or descending. The correct spelling is important to ensure clear communication and understanding in written English, especially in professional settings.