mismount noun 1verb 1forms 3 noun1 •The act or process of mismounting.In some cases we also encountered very bad results probably due to the mismount of the sample. — 1987 verb1 •To mount improperly.One afternoon his foreman, Joe, passes John's area just in time to see him mismount a piece on dures. — 1981 formsmismounted · mismounting · mismounts