Substances added to food, fuel, or other products in small amounts to improve or change their properties.
From Latin 'additivus' (that may be added), from 'addere' (to add to). The modern term became prominent with industrial food production in the 20th century.
Food additives like MSG, artificial colors, and preservatives are so controversial that the EU and US have completely different approved lists—what's safe in one country may be banned in another.
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