'Additive' may refer to:
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Additive function, a function which preserves addition
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Additive inverse, an arithmetic concept
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Additive rhythm, a larger period of time constructed from smaller ones
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Additive synthesis, an audio synthesis technique
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Additive color, as opposed to
subtractive color
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Additivity, in biochemistry, the simple sum of effects due to multiple causes
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Food additive, a substance added to food to improve flavor or appearance
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Fuel additive, a substance used to improve the performance of a fuel, lower emissions or clean the engine
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Weakly additive, the quality of preferences in some logistics problems
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Additive Records, a record label