The story
- Latin · derived frompostrēmus“[person who is] last”
- Latin · derived frompostrēmōgenitus“last-born”
- English todaypostremogeniture
First attested in 1865; either Latin postrēmōgenitus (“last-born”) + English -ure or the compounding in English of the Latin postrēmus (“[person who is] last”) + genitūra, in both cases after English primogeniture; compare postreme.
Etymology from Wiktionary, CC BY-SA 4.0.