Question

what do you mean by organic food

Answer 1

organic food is the product of a farming system which avoids the use of man-made fertilizer, pesticides, growth regulators etc.
organic food is prepared by methods that comply with the standard of organic farming.

Answer 2

organic food is such a food produced by organic farming ...
no pesticides, any artificial or synthetic chemicals, etc. used 
only manures , compost...used...
example :legumes, dairy products, vegetables, fruits, poultry etc

Hope this helps!!