1. The science and art of cultivating the soil; including the allied pursuits of gathering in the crops and rearing live stock; tillage, husbandry, farming (in the widest sense).
2. The science, art, and business of cultivating soil, producing crops, and raising livestock; farming.
3. The process, business, or science of producing food, feed, fiber, and other desired products by the cultivation of certain plants and the raising of domesticated animals (livestock).

A modern method of producing food which is characterized by the use of high-yield varieties of crops and livestock, in connection with intensive inputs in the form of machinery, energy, fertilizers, hormones, antibiotics, and other chemicals, and irrigation water: "Industrial agriculture is much more energy-intensive than traditional agriculture, and there are those who also say it results in larger crop yields."