Hircic \Hir"cic\, a. [Cf. F. hircique. See {Hircin}.] (Chem.) Of, pertaining to, or derived from, mutton suet; -- applied by Chevreul to an oily acid which was obtained from mutton suet, and to which he attributed the peculiar taste and smell of that substance. The substance has also been called {hircin}. --Watts.