·adj Of or pertaining to Pelagius, or to his doctrines.
II. Pelagian ·adj Of or pertaining to the sea; marine; pelagic; as, pelagian shells.
III. Pelagian ·noun A follower of Pelagius, a British monk, born in the later part of the 4th century, who denied the doctrines of hereditary sin, of the connection between sin and death, and of conversion through grace.