simple past tense and past participle of permanent

A surname.

plural of Perman

The quality of being permanent.

plural of permanency

(physics) A material, or piece of such material, which retains its magnetism even when not subjected to any external magnetic fields.

(rail transport, Britain, Australia) The track and ballast (bed) of a railway.

(colloquial) A tattoo / (colloquial) Any form of tattoo, piercing, (deliberate) scarring or other body modification that is considered permanent or would take significant effort to remove.

(video games) In turn-based games, the feature of an artificial intelligence opponent that allows it to evaluate and plan its moves even during another player's turn.

(communism) Of or pertaining to permanent revolution.