Corn, as the term is used in the United States, a cereal plant of the grass family, producing its grain in husk-covered ears. Elsewhere in the world, this plant usually is called maize or Indian corn, while corn is a general term for all kinds of grain, particularly for the principal cereal crop of a country. In England, for example, a head of wheat is called an ear of corn.Corn is the most important cereal crop in the United States.
In the United States corn is the most important cereal crop in acreage and value. It produces the greatest yield per acre of any cereal. It not only provides food for humans but is also an important cattle feed and has many industrial uses.
The corn kernel consists of 60 to 62 per cent starch, 9 to 10 per cent protein, 3 to 4 per cent oil, and 1.2 to 1.6 per cent sugar. It is not particularly rich in any of the vitamins.