additive

(ad′ə tiv)

adjective

Origin: LL additivus: see add

noun

a substance added to another in small quantities to produce a desired effect, as a preservative added to food or an antiknock added to gasoline

See additive in American Heritage Dictionary 4

noun

A substance added in small amounts to something else to improve, strengthen, or otherwise alter it.

adjective

Marked by, produced by, or involving addition.
Of or being any of certain primary colors of wavelengths that may be mixed with one another to produce other colors. See Table at color.

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