1. The state or quality of being indivisible or inseparable; indivisibility, inseparability.  

b. An indivisible or inseparable entity.

2. The fact or condition of existing as an individual; separate and continuous existence.

b. The action or position of the individual members of a society.  

3. The aggregate of properties peculiar to an individual; the sum of the attributes which distinguish an object from others of the same kind; individual character.

b. Idiosyncrasy; strongly marked individual character.  

c. pl. Individual characteristics.  

4. An individual thing.

b. An individual personality.  

What interests us the most is what is 'duality' doing inside of 'individuality', and we aim to explore this more carefully.