primogenitor primogenitive • primogeniture · · · Info · Definitions · Synonyms · Characters · · primogenitor · · Text Latin · · Script 12 · · Length Definitions · · · (noun) an ancestor in the direct line. Synonyms: progenitor. · · Noun Definition 1 Synonyms · · · progenitor · · Synonym 1 Characters · · e latin small letter e U+0065 g latin small letter g U+0067 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 p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074