Source : Webster's Revised Unabridged Dictionary (1913)

Monstrosity \Mon*stros"i*ty\, n.; pl. {Monstrosities}. [Cf. F.
   monstruosit['e]. See {Monstrous}.]
   The state of being monstrous, or out of the common order of
   nature; that which is monstrous; a monster. --South.

         A monstrosity never changes the name or affects the
         immutability of a species.               --Adanson
                                                  (Trans. ).