Second, it can refer to, in jurisdictions that have the form of co-ownership, the ending of a joint tenancy by act or event other than death.
Third, it can be defined in a definitions clause or table in ways including the removal of a party from an agreement, or a permitted ending of the agreement (e.g. break clause) — in an employment contract/negotiations especially common as to severance pay and other terms of severance — or part of the agreement in which case it may be either capable of forming the heart of a new agreement, that is being superseded or instead varied to be non-binding (avoided) as to future conduct (see voidable contract) and the parties should ensure which meaning is meant in this third range of senses.
[1] In a registered (or other standardised land system) colouring and other conventions may apply to such title plans.
[2] To avoid complications, some jurisdictions allow severances of a minor nature to proceed without a plan of subdivision, as long as other criteria are met.
In Canada, approval of qualifying minor severances are often referred to as "consents", and the authority to grant consents is usually given to local planning bodies such as committees of adjustment or land division committees.