[noun] [C]An additive is a substance which is added to food in order to improve its taste or appearance or to preserve it.food/chemical additivesThis margarine is full of additives - just look at the label!It says on the packet that these crisps contain no additives.
ADDITIVE
Meaning of ADDITIVE in English
Cambridge English vocab. Кембриджский английский словарь. 2012