conceptus conceptually • concern · · · Info · Definitions · Synonyms · Characters · · conceptus · · Text Latin · · Script 9 · · Length Definitions · · · (noun) an animal organism in the early stages of growth and differentiation that in higher forms merge into fetal stages but in lower forms terminate in commencement of larval life. Synonyms: embryo, fertilized egg. · · Noun Definition 1 Synonyms · · · embryo · · Synonym 1 fertilized egg · · Synonym 2 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075