What does "food additive" mean?

Any nonfood substance added to food in order to improve its flavour, appearance or shelf life.

Food additive

Common synonyms include: active additive, additive, approved additive, artificial additive, caffein, colorant.

noun

noun ·Rare ·Advanced level

Noun

1
Any nonfood substance added to food in order to improve its flavour, appearance or shelf life.
2
an additive to food intended to improve its flavor or appearance or shelf-life wordnet