An instance of change; the rate or magnitude of change.

synonym: fluctuation.

Roget 20a: variation; alteration etc. (change) 140.    modification, moods and tenses; discrepance^†, discrepancy.    divergency etc. 291; deviation etc. 279; aberration; innovation.    ... show more

Roget 84: number, symbol, numeral, figure, cipher, digit, integer; counter; round number; formula; function; series.    sum, difference, complement, subtrahend; product; multiplicand, multiplier, multiplicator^†; coefficient, multiple; dividend, divisor, factor, quotient, submultiple [Math.]; fraction, rational number; surd, irrational number; transcendental number; mixed number, complex number, complex conjugate; numerator, denominator; decimal, circulating decimal, repetend; common measure, aliquot part; prime number, prime, relative prime, prime factor, prime pair; reciprocal; totient^†.    binary number, octal number, hexadecimal number [Comp.].    permutation, combination, variation; election.    ratio, proportion, comparison etc. 464; progression; arithmetical progression, geometrical progression, harmonical progression^†; percentage, permilage.    figurate numbers^†, pyramidal numbers, polygonal numbers.    power, root, exponent, index, logarithm, antilogarithm; modulus, base.    differential, integral, fluxion^†, fluent.    ... show more

An activity that varies from a norm or standard:
— Any variation in his routine was immediately reported.

synonym: variance.

Roget 15: difference; variance, variation, variety; diversity, dissimilarity etc. 18; disagreement etc. 24; disparity etc. (inequality) 28; distinction, contradistinction; alteration.    modification, permutation, moods and tenses.    nice distinction, fine distinction, delicate distinction, subtle distinction; shade of difference, nuance; discrimination etc. 465; differentia.    different thing, something else, apple off another tree, another pair of shoes; horse of a different color; this that or the other.    ... show more

A repetition of a musical theme in which it is modified or embellished.

Dutch: variant, variatie
Polish: wariacja

Something a little different from others of the same type:
— An emery wheel is the modern variation of a grindstone.

synonyms: edition, variant, version.

Dutch: editie, variant, variatie

An artifact that deviates from a norm or standard.

The angle (at a particular location) between magnetic north and true north.

synonyms: magnetic declination, magnetic variation.

Dutch: variant
Polish: deklinacja magnetyczna, odchylenie magnetyczne

The process of varying or being varied.

astronomy Any perturbation of the mean motion or orbit of a planet or satellite (especially a perturbation of the earth's moon).

biology An organism that has characteristics resulting from chromosomal alteration.

synonyms: mutant, mutation, sport.

Roget 140: change, alteration, mutation, permutation, variation, modification, modulation, inflexion, mood, qualification, innovation, metastasis, deviation, turn, evolution, revolution; diversion; break.    transformation, transfiguration; metamorphosis; transmutation; deoxidization [Chem]; transubstantiation; [Genetics], mutagenesis transanimation^†, transmigration, metempsychosis^†; avatar; alterative.    conversion etc. (gradual change) 144; revolution etc. (sudden or radical change) 146, inversion etc. (reversal) 218; displacement etc. 185; transference etc. 270.    changeableness etc. 149; tergiversation etc. (change of mind) 607.    ... show more

ballet A solo dance or dance figure.

synonym: pas seul.

The act of changing or altering something slightly but noticeably from the norm or standard.