serialと同音

source: ハッピータイム

a grain used for food, such as wheat, oats, or corn.

｟かたく｠ 穀物; 穀類(の植物); 〖形容詞的に〗穀類の

(usually cereals) a grass producing a cereal grain, grown as an agricultural crop:

e.g. as modifier : low yields for cereal crops.

a breakfast food made from roasted grain, typically eaten with milk:

〖種類では可算〗シリアル, (朝食用)加工穀類食品〘oatmeal, cornflakesなど〙

e.g. a bowl of cereal

e.g. as modifier : a cereal box.

early 19th century (as an adjective): from Latin cerealis, from Ceres.