variant
adjective
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differing from a norm or standard“a variant spelling”
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exhibiting variation and change“letters variant in size”
noun
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something a little different from others of the same typevariation
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a variable quantity that is randomrandom variablevariatestochastic variablechance variable
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an event that departs from expectationsvariance
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(biology) a group of organisms within a species that differ in trivial ways from similar groupsstrain