Definition of aliphatic in English:


Syllabification: al·i·phat·ic
Pronunciation: /ˌaləˈfatik


  • Relating to or denoting organic compounds in which carbon atoms form open chains (as in the alkanes), not aromatic rings. Compare with alicyclic.
    More example sentences
    • For example, alkyl groups can be introduced into aliphatic hydrocarbons or aromatic hydrocarbons by alkylation reactions.
    • These included formaldehyde, several other aldehydes, ketones, aliphatic and aromatic hydrocarbons, glycol ethers, organic acids, and alcohols.
    • Aromatic and aliphatic polyurethanes share the following properties that make them suitable for use in medical devices.


(usually aliphatics) Back to top  
  • An aliphatic compound.
    More example sentences
    • The characteristic that distinguishes benzene from the aliphatics and alicyclics, and that defines the aromatics, is the arrangement of electrons in the ring.
    • Pesticide organochlorines are diphenyl aliphatics previously used to control insect vector infections.
    • Aliphatics are our company's range of hydrocarbon fluids including specialty brands.


late 19th century (originally used of the fatty acids): from Greek aleiphar, aleiphat- 'fat' + -ic.

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