Where does “noncactus” come from?

noncactus (English) comes from English non, from French non, from Old French non, from Latin nōn, from Old Latin noenum, from Proto-Indo-European óynos — one; single.

noncactus (English): Not of or pertaining to cactus

Definitions

Not of or pertaining to cactus

Ancestry of “noncactus”, step by step

noncactus traces back through two separate lines of ancestry.

via English non

Step	Language	Word	Meaning
1	English	non	Obsolete form of none
2	French	non	no; not; a no, a negative response
3	Old French	non	no; not; Alternative form of nom
4	Latin	nōn	not
5	Old Latin	noenum	—
6	Proto-Indo-European	óynos	one; single

via English cactus

Step	Language	Word	Meaning
1	English	cactus	Any member of the family Cactaceae, a family of...
2	Translingual	Cactus	obsolete genus of succulents
3	Latin	cactus	the cardoon, "Cynara cardunculus"
4	Ancient Greek	κάκτος	the cardoon, "Cynara cardunculus"; the artichoke...

Every word from Proto-Indo-European óynos →Every word from Old Latin noenum →Every word from Latin nōn →