Source : Webster's Revised Unabridged Dictionary (1913)

Dissimilitude \Dis`si*mil"i*tude\, n. [L. dissimilitudo, fr.
   dissimilis: cf. F. dissimilitude.]
   1. Want of resemblance; unlikeness; dissimilarity.

            Dissimilitude between the Divinity and images.
                                                  --Stillingfleet.

   2. (Rhet.) A comparison by contrast; a dissimile.

Source : WordNet®

dissimilitude
     n : dissimilarity evidenced by an absence of likeness [syn: {unlikeness}]
         [ant: {likeness}, {likeness}]