Meaning of ADDITIVE in English

ADDITIVE

/ ˈædətɪv; NAmE / noun

a substance that is added in small amounts to sth, especially food, in order to improve it, give it colour, make it last longer, etc. :

food additives

additive-free orange juice

chemical additives in petrol

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WORD ORIGIN

late 17th cent. (as an adjective): from late Latin additivus , from Latin addit- added, from the verb addere , from ad- to + the base of dare put. The noun dates from the 1940s.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.