pop‧corn /ˈpɒpkɔːn $ ˈpɑːpkɔːrn/ BrE AmE noun [uncountable]
a kind of corn that swells and bursts open when heated, and is usually eaten warm with salt or sugar as a ↑snack
a type of food made from grains of maize ( corn ) that are heated until they burst, forming light whitish balls that are then covered with salt or sugar
Popcorn is a snack which consists of grains of maize or corn that have been heated until they have burst and become large and light. It can be eaten with salt or sometimes sugar.
pop·corn /ˈpɑːpˌkoɚn/ noun[noncount] : corn in the form of hard yellow seeds that burst open and become soft and white when they are heated • We watched a movie and ate (a bag of) popcorn.