The definition of organic food, according to Wikipedia

Organic foods are foods that are produced using methods that do not involve modern synthetic inputs such as synthetic pesticides and chemical fertilizers. Organic food is not processed using irradiation, industrial solvents, or chemical food additives.

Meanwhile, according to the American Cancer Society:

The term “organic” is widely used to describe the food of plants that grow without adding artificial chemicals, and food from animals raised without hormones or antibiotics. Organic plant foods derived from agricultural methods that do not use conventional pesticides or chemical weed killers, chemical fertilizers or sewage sludge as fertilizer, or in the processing of food irradiation. Genetically modified foods can not be called organic.

The definition of organic food

Examples of organic foods is an easy chicken (chicken country) who live in the village or villages that are free from contamination and the eating of natural foods such as bran and worms in the garden. While Broiler chickens (broilers) were fed and drugs with a mixture of inorganic chemistry are examples of food. These include organic rice planting in areas of agriculture / rice fields without pesticides and chemical fertilizers.

Source : http://www.pelangsingsehat.info/2013/01/apa-itu-makanan-organik.html