Where does “insidens” come from?

insidens (Latin) comes from Latin īnsideō, from Latin īn-, from Latin în, from Latin en, from Proto-Italic en, from Proto-Indo-European h₁én — in.

insidens (Latin): sitting down, being seated; adhering to; being...

Definitions

Step	Language	Word	Meaning
1	Latin	īnsideō	to sit down, in or upon; to be seated or rest in or upon
2	Latin	īn-	un-, non-, not
3	Latin	în	in, at, on, upon, from (space)
4	Latin	en	lookǃ beholdǃ; reallyǃ?; come onǃ
5	Proto-Italic	en	in
6	Proto-Indo-European	h₁én	in