Meaning of ALIPHATIC in English

ALIPHATIC

(a.) 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.

Webster's English dictionary.      Английский словарь Webster.