Where does “intersect” come from?

Intersect comes from Latin intersecare, combining inter- with secare (to cut), which derives from Proto-Indo-European sek-.

intersect (English): To cut into or between; to cut or cross mutually;...

Definitions

  1. To cut into or between; to cut or cross mutually;...

Ancestry of “intersect”, step by step

intersect traces back through two separate lines of ancestry.

via English sect

StepLanguageWordMeaning
1EnglishsectAn offshoot of a larger religion; a group sharing...
2Middle EnglishsecteA variety or sort; a category with a...
3Old Frenchsectea sect in philosophy or religion
4Late Latinsectaa sect in philosophy or religion, a school,...
5Latinsequipresent active infinitive of sequor; follow, come...
6LatinsequorI follow, come or go after
7Proto-Italicsekʷōrfollow, come/go after
8Proto-Indo-Europeansékʷetorto be following
9Proto-Indo-Europeansekʷ-to follow; to see; to say

via Latin intersecare

StepLanguageWordMeaning
1Latinintersecaresecond-person singular present passive...
2Latinsecareinflection of secō: ## present active...
3LatinsecoI cut, cut off; I cleave, divide; I operate,...

Words derived from “intersect

Every word from Proto-Indo-European sekʷ-
intersect — Etymology, Origin & Word History | Etymology Explorer