Learn how to say Cereals correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word cereal:
1a grain used for food, for example wheat, maize, or rye.
a grass producing edible grain that is grown as an agricultural crop:
2 [mass noun] a breakfast food made from roasted grain, typically eaten with milk:
a bowl of cereal
early 19th century (as an adjective): from Latin cerealis, from Ceres
Do not confuse cereal with serial. Cereal means ‘a grass producing an edible grain, such as wheat’, whereas serial means ‘happening in a series’ (serial killings).