- 1
To take out of service or to render unusable.
- They decommissioned the ship after the accident.
- The Army decommissioned the Sherman tank by filling the turret with cement.
- 2
To remove or revoke the commission of.transitive
- After his arrest, the officer was decommissioned from the police force.
- 3
To remove or revoke the formal designation of.transitive
- The state highway was decommissioned and reverted to local control.
ant. commission