1Chiefly in religious contexts: the deliverance or liberation of oneself from a controlling force, as temptation, sin, etc.
2The action or fact of a person who is terminally ill or suffering from an incurable condition voluntarily ending his or her own life, (sometimes) specifically with the assistance of another person; suicide viewed as a deliverance from intolerable suffering.
Used by advocates of assisted dying to avoid the more negative connotations of suicide.
Mid 17th century; earliest use found in Obadiah Sedgwick (d. 1658), Church of England clergyman. From self- + deliverance.