2. (noun)variation, variance an activity that varies from a norm or standard "any variation in his routine was immediately reported"
3. (noun)variation a repetition of a musicaltheme in which it is modified or embellished
4. (noun)version, variant, variation, edition something a little different from others of the sametype "an experimental version of the night fighter"; "a variant of the same word"; "an emery wheel is the modern variation of a grindstone"; "the boy is a younger edition of his father"
5. (noun)variation an artifact that deviates from a norm or standard "he patented a variation on the sandal"
6. (noun)magnetic declination, magnetic variation, variation the angle (at a particular location) between magnetic north and truenorth
7. (noun)variation the process of varying or being varied
11. (noun)variation the act of changing or altering something slightly but noticeably from the norm or standard "who is responsible for these variations in taxation?"