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Definition of variation
1a change or difference in condition, amount, or level, typically with certain limits:regional variations in house prices the figures showed marked variation from year to year Astronomy a deviation of a celestial body from its mean orbit or motion. Mathematics a change in the value of a function due to small changes in the values of its argument or arguments. (also magnetic variation) the angular difference between true north and magnetic north at a particular place. Biology the occurrence of an organism in more than one distinct color or form. 2a different or distinct form or version of something:hurling is an Irish variation of field hockey Music a version of a theme, modified in melody, rhythm, harmony, or ornamentation, so as to present it in a new but still recognizable form:there is an eleven-bar theme followed by seven variations and a coda figurativevariations on the perennial theme of marital discord Ballet a solo dance as part of a performance.