Where does “sciscendus” come from?

sciscendus (Latin) comes from Latin scisco, from Latin scio, from Proto-Italic skijō, from Proto-Indo-European skey-, from Proto-Indo-European sek- — to cut, cut off, sever.

Definitions

Ancestry of “sciscendus”, step by step

Step	Language	Word	Meaning
1	Latin	scisco	I seek to know; ask, search, inquire, question; I...
2	Latin	scio	I can, know, understand, have knowledge; I know...
3	Proto-Italic	skijō	—
4	Proto-Indo-European	skey-	to split, to dissect
5	Proto-Indo-European	sek-	to cut, cut off, sever

Every word from Proto-Indo-European sek- →Every word from Proto-Indo-European skey- →Every word from Proto-Italic skijō →