Where does “συναίρεσις” come from?

συναίρεσις (Ancient Greek) comes from Ancient Greek αἵρεσις, from Ancient Greek αἱρέω, from Proto-Hellenic həřřéyō, from Proto-Indo-European sēr-, from Proto-Indo-European ser- — to flow; to guard; to bind, to tie together.

συναίρεσις (Ancient Greek): taking or drawing together; contraction, closing;...

Definitions

taking or drawing together; contraction, closing;...

Ancestry of “συναίρεσις”, step by step

συναίρεσις traces back through 3 separate lines of ancestry.

via Ancient Greek αἵρεσις

Step	Language	Word	Meaning
1	Ancient Greek	αἵρεσις	taking, receiving; a choice, selection; a purpose
2	Ancient Greek	αἱρέω	to take, grasp, seize; to win, gain; to convict,...
3	Proto-Hellenic	həřřéyō	—
4	Proto-Indo-European	sēr-	to flow
5	Proto-Indo-European	ser-	to flow; to guard; to bind, to tie together

via Ancient Greek συναιρέω

Step	Language	Word	Meaning
1	Ancient Greek	συναιρέω	to grasp or seize together, to seize at once
2	Ancient Greek	σῠν-	together; with, together
3	Ancient Greek	σύν	beside, with
4	Proto-Hellenic	*ksún	beside, with

via Ancient Greek σῠναιρέω

Step	Language	Word	Meaning
1	Ancient Greek	σῠναιρέω	to grasp or seize together, to seize at once

Words derived from “συναίρεσις”

Every word from Proto-Indo-European ser- →Every word from Proto-Indo-European sēr- →Every word from Proto-Hellenic həřřéyō →