Source : Webster's Revised Unabridged Dictionary (1913)

Particularity \Par*tic`u*lar"i*ty\, n.; pl. {Particularities}.
   [Cf. F. particularit['e].]
   1. The state or quality of being particular; distinctiveness;
      circumstantiality; minuteness in detail.

   2. That which is particular; as:
      (a) Peculiar quality; individual characteristic;
          peculiarity. ``An old heathen altar with this
          particularity.'' --Addison.
      (b) Special circumstance; minute detail; particular.
          ``Even descending to particularities.'' --Sir P.
          Sidney.
      (c) Something of special or private concern or interest.

                Let the general trumpet blow his blast,
                Particularities and petty sounds To cease!
                                                  --Shak.

Source : WordNet®

particularity
     n : the quality of being particular and pertaining to a specific
         case or instance; "the particularity of human situations"
         [ant: {generality}]