organic chemistry

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The chemistry of carbon compounds.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun chemistry The chemistry of carbon-containing compounds, especially those that occur naturally in living organisms.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the chemistry of compounds containing carbon (originally defined as the chemistry of substances produced by living organisms but now extended to substances synthesized artificially)