Source : Webster's Revised Unabridged Dictionary (1913)

Dissimilar \Dis*sim"i*lar\, a. [Pref. dis- + similar: cf. F.
   dissimilaire.]
   Not similar; unlike; heterogeneous; as, the tempers of men
   are as dissimilar as their features.

         This part very dissimilar to any other.  --Boyle.

Source : WordNet®

dissimilar
     adj 1: not similar; "a group of very dissimilar people"; "a pump
            not dissimilar to those once found on every farm";
            "their understanding of the world is not so dissimilar
            from our own"; "took different (or dissimilar)
            approaches to the problem" [ant: {similar}]
     2: not alike or similar; "as unalike as two people could be"
        [syn: {unalike}] [ant: {alike(p)}]
     3: not like; marked by dissimilarity; "for twins they are very
        unlike"; "people are profoundly different" [syn: {unlike},
         {different}] [ant: {like}]