Additive may refer to:
Mathematics Additive function, a function in number theory Additive map, a function that preserves the addition operation Additive set-function see Sigma additivity Additive category, a preadditive category with finite biproducts Additive inverse, an arithmetic concept Additive prime, a prime number where the sum of its digits is a number which is also a prime number.
Science Additive color, as opposed to subtractive color Additive model, a statistical regression model Additive synthesis, an audio synthesis technique Additive genetic effects Additive quantity, a physical quantity that is additive for subsystems; see Intensive and extensive properties
Engineering Feed additive Gasoline additive, a substance used to improve the performance of a fuel, lower emissions or clean the engine Oil additive, a substance used to improve the performance of a lubricant Weakly additive, the quality of preferences in some logistics problems Polymer additive Pit additive, a material aiming to reduce fecal sludge build-up and control odor in pit latrines, septic tanks and wastewater treatment plants Biodegradable additives
Other uses , one of the grammatical cases in Estonian Food additive, any substance added to food to improve flavor, appearance, shelf life, etc. Additive rhythm, a larger period of time constructed from smaller ones