\Pe*la"gi*an\, a. [L. pelagius, Gr. ?, fr. ? the sea:
cf. F. p['e]lagien.]
Of or pertaining to the sea; marine; pelagic; as, pelagian
shells.

\Pe*la"gi*an\, n. [L. Pelagianus: cf. F. p['e]lagien.]
(Eccl. Hist.)
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.

\Pe*la"gi*an\, a. [Cf. F. p['e]lagien.]
Of or pertaining to Pelagius, or to his doctrines.