Hypidiomorphic \Hy*pid`i*o*mor"phic\, a. [Pref. hypo- +
idiomorphic.] (Crystallog.)
Partly idiomorphic; -- said of rock a portion only of whose
constituents have a distinct crystalline form. --
{Hy*pid`i*o*mor"phic*al*ly}, adv.
[1913 Webster]