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Webster 1913 Edition

Noun.

A state of separation or disunion; want of unity.

Dr. H. More.

Noun.

Disyunity. A state of separation.

disunity ‎(plural disunities)

The lack of unity or cohesion.
- 1924, "Irish Crisis," Time, 29 Sep.,
  Others support either the North or the Free State; and so where there is disunity there is dissension.

lack of unity or cohesion