Where does “determine” come from?

Determine comes from Old French determiner, meaning to set boundaries or limit.

determine (English): To set the boundaries or limits of; To ascertain...

Definitions

Step	Language	Word	Meaning
1	Middle English	determinen	—
2	Old French	determiner	—
3	Latin	dēterminare	—
4	Latin	terminare	present active infinitive of terminō;...
5	Latin	Terminus	—
6	Proto-Indo-European	ter-	tender, weak; young creature
7	Italian	termine	end, close; limit, term, date, time; term, word
8	Latin	terminus	a boundary, limit, end
9	Proto-Italic	termenos	—
10	Proto-Indo-European	térmn̥	boundary, end

determine — Etymology, Origin & Word History | Etymology Explorer