pri ‧ mo ‧ gen ‧ i ‧ ture /ˌpraɪməʊˈdʒenətʃə, ˌpraɪməʊˈdʒenɪtʃə $ -moʊˈdʒenətʃər/ BrE AmE noun [uncountable] law
[ Date: 1600-1700 ; Language: Late Latin ; Origin: primogenitura , from Latin primus ( ⇨ ↑ prime 1 ) + genitura 'birth' ]
the system by which property that is owned by a man goes to his oldest son after his death