The property of being alterable.

plural of alterer

One who alters.

(especially in the plural) An identity or headmate of a person with dissociative identity disorder (previously known as multiple personality disorder). A member of a system.

(transitive) To change the form or structure of. / (intransitive) To become different. / (transitive) To tailor clothes to make them fit.

Misspelling of altar.

(medicine, now historical) A medicine or treatment which works by changing processes within the body, rather than by evacuating something etc.

The act of altering or making different. / The state of being altered; a change made in the form or nature of a thing; a changed condition.

Causing alteration. / (medicine) Gradually changing, or tending to change, a morbid state into a healthy one.

The state or quality of being alterable.