popcorn Syllabification: (pop·corn)Pronunciation: /ˈpäpˌkôrn/Translate popcorn | into German | into Italian | into Spanish Definition of popcorn noun corn of a variety with hard kernels that swell up and burst open with a pop when heated. corn kernels when popped, typically buttered and salted and eaten as a snack. popcorn in other Oxford dictionaries Definition of popcorn in the British & World English dictionary