ALIPHATIC
aliphatic
(adjective) having carbon atoms linked in open chains
Source: WordNet® 3.1
Etymology
Adjective
aliphatic (not comparable)
(organic chemistry) Of a class of organic compounds in which the carbon atoms are arranged in an open chain.
Noun
aliphatic (plural aliphatics)
A compound of this type.
(chiefly, in the plural) A petroleum fraction containing no aromatic compounds
Source: Wiktionary
Al`i*phat"ic, a. [Gr. , , oil, fat.] (Org. Chem.)
Definition: Of, pertaining to, or derived from, fat; fatty; -- applied to
compounds having an openc-hain structure. The aliphatic compounds
thus include not only the fatty acids and other derivatives of the
paraffin hydrocarbons, but also unsaturated compounds, as the
ethylene and acetylene series.
Source: Webster’s Unabridged Dictionary 1913 Edition