or•gan•icɔrˈgæn ɪk(adj.)

1. noting or pertaining to a class of chemical compounds that formerly comprised only those existing in or derived from plants or animals, but that now includes all other compounds of carbon.

   Category: Chemistry

   Ref: Compare inorganic (def. 3). 3

2. pertaining to, characteristic of, or derived from living organisms.

3. of, pertaining to, or involving animals, produce, etc., raised or grown without synthetic fertilizers, pesticides, or drugs:

   organic farming; organic chicken.

   Category: Agriculture, Nutrition

4. of or pertaining to an organ or the organs of an animal, plant, or fungus.

   Category: Zoology

5. of, pertaining to, or affecting living tissue.

6. caused by physical change or impairment: organic disorder.

   Category: Psychology, Pathology

   Ref: Compare functional (def. 5). 5

7. characterized by the systematic arrangement of parts; organized; systematic.

8. of or pertaining to the basic constitution or structure of a thing; constitutional; inherent; fundamental.

9. developing in the manner of living organisms:

   a view of history as organic.

10. Law. pertaining to the laws organizing the government of a state.

    Category: Law

11. (n.)a substance, as a fertilizer or pesticide, of animal or vegetable origin.

    Category: Agriculture, Pesticides

Origin of organic:

1350–1400; < L organicus by or employing a mechanical device, instrumental < Gk organikós

or•gan′i•cal•ly(adv.)