Where does “exquartiare” come from?

exquartiare (Vulgar Latin) comes from Latin quartus, from Latin quattuor, from Latin caput, from Proto-Italic kaput, from Proto-Indo-European káput, from Proto-Indo-European kap- — to seize, hold.

Ancestry of “exquartiare”, step by step

Step	Language	Word	Meaning
1	Latin	quartus	fourth, the ordinal number after "tertius" and...
2	Latin	quattuor	four; 4
3	Latin	caput	head; headlike protuberance on an organ or body...
4	Proto-Italic	kaput	head
5	Proto-Indo-European	káput	head
6	Proto-Indo-European	kap-	to seize, hold

Words derived from “exquartiare”

squarciare
squarciamento

Every word from Proto-Indo-European kap- →Every word from Proto-Indo-European káput →Every word from Proto-Italic kaput →