Where does “definen” come from?

definen (Middle English) comes from Old French definer, from Latin dēfīniō, from Latin dē-, from Latin dē, from Latin post, from Latin poste, from Proto-Italic posti, from Proto-Indo-European pósti — afterwards, post; by, at.

Ancestry of “definen”, step by step

StepLanguageWordMeaning
1Old Frenchdefinerto finish; to end
2Latindēfīniōto bound, set bounds to; to limit
3Latindē-of; from
4Latinof; concerning; about
5Latinpostbehind; after, since, besides, except; behind,...
6Latinposteablative singular of postis
7Proto-Italicpostibehind, after
8Proto-Indo-Europeanpóstiafter
9Proto-Indo-Europeanpósafterwards, post; by, at

Words derived from “definen

Every word from Proto-Indo-European pósEvery word from Latin dē-Every word from Proto-Indo-European pósti