Where does “virdis” come from?

virdis (Classical Latin) comes from Latin viridis, from Latin vireō, from Latin -idae.

Ancestry of “virdis”, step by step

Step	Language	Word	Meaning
1	Latin	viridis	green; young, fresh, lively, youthful
2	Latin	vireō	to be verdant, green; to sprout new green growth
3	Latin	-idae	—