additive (adj.)youdaoicibaDictYouDict[additive 词源字典]
1690s, "tending to be added," from Latin additivus "added, annexed," from past participle stem of addere (see addition).[additive etymology, additive origin, 英语词源]
additive (n.)youdaoicibaDictYouDict
"something that is added" to a chemical solution or food product, 1945, from additive (adj.).