a. [ Cf. F. difforme, fr. L. dif- = dis- + forma form. Cf. Deform. ] Irregular in form; -- opposed to uniform; anomalous; hence, unlike; dissimilar; as, to difform corolla, the parts of which do not correspond in size or proportion; difform leaves. [ 1913 Webster ]

The unequal refractions of difform rays. Sir I. Newton. [ 1913 Webster ]

n. [ Cf. F. difformité. See Difform, Deformity. ] Irregularity of form; diversity of form; want of uniformity. [ Obs. ] Sir T. Browne. [ 1913 Webster ]