propylene glycolnoun [ U ]
uk/ˌprəʊ.pɪ.liːn ˈɡlaɪ.kɒl//ˌproʊ.pɪ.liːn ˈɡlaɪ.kɑːl/specializeda chemical compound used mainly for making polymers (= chemical substances consisting of large molecules made from smaller molecules) and in food production
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