Source : Webster's Revised Unabridged Dictionary (1913)

Singularity \Sin`gu*lar"i*ty\, n.; pl. {Singularities}. [L.
   singularitas: cf. F. singularit['e].]
   1. The quality or state of being singular; some character or
      quality of a thing by which it is distinguished from all,
      or from most, others; peculiarity.

            Pliny addeth this singularity to that soil, that the
            second year the very falling down of the seeds
            yieldeth corn.                        --Sir. W.
                                                  Raleigh.

            I took notice of this little figure for the
            singularity of the instrument.        --Addison.

   2. Anything singular, rare, or curious.

            Your gallery Have we passed through, not without
            much content In many singularities.   --Shak.

   3. Possession of a particular or exclusive privilege,
      prerogative, or distinction.

            No bishop of Rome ever took upon him this name of
            singularity [universal bishop].       --Hooker.

            Catholicism . . . must be understood in opposition
            to the legal singularity of the Jewish nation. --Bp.
                                                  Pearson.

   4. Celibacy. [Obs.] --Jer. Taylor.

Source : WordNet®

singularity
     n 1: the quality of being one of a kind; "that singularity
          distinguished him from all his companions" [syn: {uniqueness}]
     2: strangeness by virtue of being remarkable or unusual