Where does “narcissitis” come from?

narcissitis (Latin) comes from Ancient Greek ναρκισσῖτις, from Ancient Greek νάρκισσος — daffodil, narcissus.

narcissitis (Latin): An unknown kind of gem

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	ναρκισσῖτις	—
2	Ancient Greek	νάρκισσος	daffodil, narcissus

narcissitis — Etymology, Origin & Word History | Etymology Explorer