We don't have synonyms for marcionites yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are marcionite and maronites.
(n) :
(Christianity) An early Christian following akin to but distinct from gnosticism which rejected the validity of the Old Testament and essentially denied the Trinity, regarding God the Father as an inferior demiurge, and that Jesus had nothing to do with the First Person of the Trinity.
(n) :
(Christianity) An early Christian following akin to but distinct from gnosticism which rejected the validity of the Old Testament and essentially denied the Trinity, regarding God the Father as an inferior demiurge, and that Jesus had nothing to do with the First Person of the Trinity.