"additive" in the noun sense
something added to enhance food or gasoline or paint or medicine
"additive" in the adjective sense
1. linear, additive
designating or involving an equation whose terms are of the first degree
characterized or produced by addition
"an additive process"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License