pri·mo·gen·i·tor \ˌ ̷ ̷(ˌ) ̷ ̷ˈjenəd.ə(r)\noun Etymology: Late Latin, from Latin primus first + genitor begetter — more at genitor : first ancestor < this tiny, nameless primogenitor of all living matter — Time > broadly: ancestor, forefather < our distant primogenitors >