aliphatic
(adjective)
 Of a class of organic compounds in which the carbon atoms are arranged in an open chain.
Examples of aliphatic in the following topics:
- 
Hydrocarbons- The hydrocarbons discussed so far have been aliphatic hydrocarbons, which consist of linear chains of carbon atoms.
- Some hydrocarbons have both aliphatic and aromatic portions; beta-carotene is an example of such a hydrocarbon.