aliphatic

[al-uh-fat-ik]
adjective Chemistry.
pertaining to nonaromatic hydrocarbon compounds in which the constituent carbon atoms can be straight-chain, branched chain, or cyclic, as in alicyclic compounds; saturated, as in the paraffins; or unsaturated, as in the olefins and alkynes.

Origin:
1885–90; < Greek aleiphat- (stem of áleiphar oil, fat) + -ic

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World English Dictionary
aliphatic (ˌælɪˈfætɪk)
 
adj
(of an organic compound) not aromatic, esp having an open chain structure, such as alkanes, alkenes, and alkynes
 
[C19: from Greek aleiphat-, aleiphar oil]

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Medical Dictionary

aliphatic al·i·phat·ic (āl'ə-fāt'ĭk)
adj.
Of, relating to, or being a group of organic chemical compounds in which the carbon atoms are linked in open chains.

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Science Dictionary
aliphatic   (āl'ə-fāt'ĭk)  Pronunciation Key 


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Relating to organic compounds whose carbon atoms are linked in open chains, either straight or branched, rather than containing a benzene ring. Alkanes, alkenes, and alkynes are aliphatic compounds. Compare aromatic.
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Example sentences
They were blends of aromatic and aliphatic compounds and hence the emissions.
Why that might be was hinted at by a second sort of molecule-a group of compounds called aliphatic amines.
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