meconium meconioid • meconology · · · Info · Definitions · Characters · · meconium · · Text Latin · · Script 8 · · Length Definitions · · · (noun) thick dark green mucoid material that is the first feces of a newborn child. · · Noun Definition 1 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 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 u latin small letter u U+0075