Marcionism marcid • Marcionist · · · Info · Definitions · Characters · · Marcionism · · Text Latin · · Script 10 · · Length Definitions · · · (noun) the Christian heresy of the 2nd and 3rd centuries that rejected the Old Testament and denied the incarnation of God in Jesus as a human. · · Noun Definition 1 Characters · · M latin capital letter m U+004D a latin small letter a U+0061 c latin small letter c U+0063 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073