As a Noun: 1. The pulling apart of two things that are joined. English = disconnection. 2. The detachment of a piece of equipment from its source of power. English = disconnection. 3. The act of setting a person or animal that has been in captivity free. English = release. As a Verb or Adjective: 1. Of two things that are joined, to pull them apart. English = disconnect. 2. Of a piece of equipment, to detach it from its source of power, such as gas or electricity. English = disconnect. 3. Of a lock, to open it by means of a key. English = unlock. 4. Of a person or animal that has been in captivity, to set them free. English = release.