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

(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.

Misspelling of altar.

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

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

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.

(philosophy, anthropology) Otherness; the entity in contrast to which an identity is constructed.

simple past tense and past participle of alter

A kind of car in drag racing, usually with a partial body situated behind the exposed engine.

Having been changed from an original form. / (of an animal, usually a pet) Neutered; having had testicles or uterus and ovaries removed to prevent procreation.