What does 'grain' refer to in agricultural terms?

In agricultural terms, 'grain' specifically refers to the seeds of cereal grasses, which are cultivated for food. This includes commonly known grains such as wheat, corn, rice, barley, and oats. These seeds are vital food sources for both humans and animals and are characterized by their high carbohydrate content.

The classification of grain as the seed of cereal grasses differentiates it from other agricultural products like fruits or vegetables, which come from different types of plants. This distinction is significant because grains are typically harvested and processed in ways that contribute to staple foods and various products, such as flour or animal feed. Understanding this definition is fundamental for anyone involved in agriculture, as it emphasizes the importance of grains in food production systems.