Today's words

Three new words from a single Dictionary Devil puzzle this morning. I've listed them in increasing likelihood of my ever encountering or using them in the wild:

instar /ˈin-ˌstär/ - a stage in the life of an arthropod (such as an insect) between two successive molts
also : an individual in a specified instar

I suppose it's probably odd to think that I'm more likely to need the "also" definition than the primary one. 

florilegium /ˌflȯr-ə-ˈlē-j(ē-)əm/ plural florilegia /ˌflȯr-​ə-​ˈlē-​j(ē-​)ə/ - a volume of writings : anthology

The flowery source of this word is evident. Nice word.

viridity /və-ˈri-də-tē/ - 1a. the quality or state of being green  b. the color of grass or foliage  2. naive innocence

I think I may have encountered this word in its first sense, and might not have thought to list it here if the puzzle hadn't used the second sense. I suppose I am jealous of those whose life didn't crush this form of viridity out of them before they'd matured sufficiently for the word to apply to them.