The Collaborative International Dictionary of English v.0.48:

Individuality \In`di*vid`u*al"i*ty\, n.; pl. Individualities.
   [Cf. F. individualit['e].]
   [1913 Webster]
   1. The quality or state of being individual or constituting
      an individual; separate or distinct existence; oneness;
      unity. --Arbuthnot.
      [1913 Webster]

            They possess separate individualities. --H. Spencer.
      [1913 Webster]

   2. The character or property appropriate or peculiar to an
      individual; that quality which distinguishes one person or
      thing from another; the sum of characteristic traits;
      distinctive character; as, he is a person of marked
      individuality.
      [1913 Webster]

   3. A habit of thinking and acting in one's own distinctive
      manner and as one believes appropriate, not being heavily
      influenced by the opinions of others; -- of people.
      [PJC]