ad ‧ di ‧ tive /ˈædətɪv, ˈædɪtɪv/ BrE AmE noun [countable usually plural]
[ Word Family: noun : ↑ addition , ↑ additive ; adjective : additonal, ↑ added ; verb : ↑ add ; adverb : ↑ additionally ]
a substance that is added to food to improve its taste, appearance etc:
permitted food additives
Our products are free from artificial additives.