variation

Variation or Variations may refer to:

Science and mathematics

Variation (astronomy), any perturbation of the mean motion or orbit of a planet or satellite, particularly of the moon
Genetic variation, the difference in DNA among individuals or the differences between populations
Human genetic variation, genetic differences in and among populations of humans
Magnetic variation, difference between magnetic north and true north, measured as an angle
p-variation in mathematical analysis, a family of seminorms of functions
Coefficient of variation in probability theory and statistics, a standardized measure of dispersion of a probability distribution or frequency distribution
Total variation in mathematical analysis, a way of quantifying the change in a function over a subset of $\mathbb{R}^n$ or a measure space
Calculus of variations in mathematical analysis, a method of finding maxima and minima of functionals

Variation (music), a formal technique where material is altered during repetition
Variations (Cage), a series of works by American avant-garde composer John Cage
Variations (musical), 1982 Australian musical by Nick Enright and Terence Clarke
Variations (Stravinsky), Igor Stravinsky's last orchestral composition written in 1963–64
Variation, album by Akina Nakamori
Les Variations, a French rock group
Variations (Andrew Lloyd Webber album), 1978
Variations (Eddie Rabbitt album), 1978

Variation (game), modifications made to a game by a community of players (as opposed to a central authority)
Variation (game tree), a particular series of moves
Variation (linguistics), a linguistic characteristic of languages
Variation (horse), a British Thoroughbred
Variation of the field, a concept in heraldry