/mahr"sheuh nuyt'/ , n.
1. a member of a Gnostic ascetic sect that flourished from the 2nd to 7th century A.D. and that rejected the Old Testament and denied the incarnation of God in Christ.
adj.
2. of or pertaining to the Marcionites or their doctrines.
Also, Marcionist .
[ 1530-40; Marcionita. See MARCION, -ITE 1 ]