Where does “assises” come from?

assises (Old French) comes from Latin assideō, from Latin ad-, from Latin īn-, from Latin în, from Latin en, from Proto-Italic en, from Proto-Indo-European h₁én — in.

Ancestry of “assises”, step by step

assises traces back through two separate lines of ancestry.

via Latin assideō

Step	Language	Word	Meaning
1	Latin	assideō	to sit by or near someone or something
2	Latin	ad-	to; usually prefixed to verbs, in which cases it...
3	Latin	īn-	un-, non-, not
4	Latin	în	in, at, on, upon, from (space)
5	Latin	en	lookǃ beholdǃ; reallyǃ?; come onǃ
6	Proto-Italic	en	in
7	Proto-Indo-European	h₁én	in

via Old French asseoir

Step	Language	Word	Meaning
1	Old French	asseoir	to sit down; to sit
2	Vulgar Latin	assedere	third-person plural perfect active indicative of...
3	Latin	assidēre	—
4	Latin	sedeō	to sit, to be seated
5	Proto-Italic	sedēō	sit, be sitting, be seated
6	Proto-Indo-European	sḗd-	to sit

Words derived from “assises”

Every word from Proto-Indo-European h₁én →Every word from Latin īn- →Every word from Latin ad- →