Emily Dickinson Lexicon

DIF'FORM, a. [L. dis and forma. But it appears to have been adopted from the French or Italian, difforme, which we write deform.]

1. Irregular in form; not uniform; anomalous; as, a difform flower or corol, the parts of which do not correspond in size or proportion; so, difform leaves. – Martyn.
2. Unlike; dissimilar. The unequal refractions of deform rays. – Newton.