A substance added in small amounts to something else to improve, strengthen, or otherwise alter it. Additives are used for a variety of reasons. They are added to food, for example, to enhance taste or color or to prevent spoilage. They are added to gasoline to reduce the emission of greenhouse gases, and to plastics to enhance molding capability.
- Relating to the production of color by the mixing of light rays of varying wavelengths.
Compare subtractive See Note at color
- Mathematics Marked by, produced by, or involving addition.