\Dif"form`\, 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.
      The unequal refractions of difform rays. --Sir I.
                                               Newton.