primordium primordiate • primosity · · · Info · Definitions · Synonyms · Characters · · primordium · · Text Latin · · Script 10 · · Length Definitions · · · (noun) an organ in its earliest stage of development; the foundation for subsequent development. Synonyms: anlage. · · Noun Definition 1 Synonyms · · · anlage · · Synonym 1 Characters · · d latin small letter d U+0064 i latin small letter i U+0069 m latin small letter m U+006D o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 u latin small letter u U+0075