Where does “ծփենի” come from?

ծփենի (Armenian) comes from Armenian -ենի, from Middle Armenian -ենի, from Old Armenian -ենի, from Old Armenian -ի, from Proto-Indo-European -yo-.

Ancestry of “ծփենի”, step by step

Step	Language	Word	Meaning
1	Armenian	-ենի	forming names of trees and shrubs; forming names...
2	Middle Armenian	-ենի	forming names of trees and shrubs
3	Old Armenian	-ենի	forming adjectives; forming names of trees and...
4	Old Armenian	-ի	forming adjectives; forming botanical names; made...
5	Proto-Indo-European	-yo-	—