severance

Definitions:

The act of severing; a joint and several bond or obligation, one signed by two or more persons, who become unitedly and individually bound.
- Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874. (noun) (n.) (noun)
Act of severing: separation.
- The american dictionary of the english language. By Daniel Lyons. Published 1899. (noun) (n.) (noun)
Separation; the act of serarating.
- Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914. (noun) (n.) (noun)
The act of separating or dividing; the state of being separated or divided.
- The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919. (noun) (n.) (noun)

Usage examples:

For Daniel Granger and herself there might be parting, an eternal severance but there could be no creature so cruel as to rob her of her child.
- The Lovels of Arden by M. E. Braddon
Ignorant that she herself was very much afraid of being equally smitten, he glanced every morning at the condition of the flowers, the death of which was to bring about the severance of their connection, and found it very difficult to account for their continued freshness.
- Bohemians of the Latin Quarter by Henry Murger
And why did we declare diplomatic severance with Germany?
- Peking Dust by Ellen N. La Motte