n.1. The act or process of disconnecting or detaching; separation.
2. The state of being separate or detached.
3. Indifference to or remoteness from the concerns of others; aloofness: preserved a chilly detachment in his relations with the family.
4. Absence of prejudice or bias; disinterest: strove to maintain her professional detachment in the case.
5. a. The dispatch of a military unit, such as troops or ships, from a larger body for a special duty or mission.
b. The unit so dispatched.
c. A permanent unit, usually smaller than a platoon, organized for special duties.