The Green

"(biology) Pertaining to, derived from, like, of the nature of, an organ of the body. (chemistry) relating to the compounds of carbon, relating to natural products. Organic often refers to food or food products, grown in an environment free from artificial agro-chemicals, and possibly certified organic by a regulatory body." (Wikipedia) [en.wikipedia.org]

In a loose sense, organic usually refers to a product that is produced in a natural fashion, without the aid of synthesized materials that are produced by a process separate from nature.