Where does “lucescens” come from?

lucescens (Latin) comes from Latin lucesco, from Latin lūceō, from Proto-Italic loukeō, from Proto-Indo-European lowkéye-, from Proto-Indo-European lewk- — bright; to shine; to see.

Definitions

Ancestry of “lucescens”, step by step

Step	Language	Word	Meaning
1	Latin	lucesco	I begin to shine; it dawns
2	Latin	lūceō	to be light, clear; to shine, glitter
3	Proto-Italic	loukeō	cause to emit light, cause to shine, ignite
4	Proto-Indo-European	lowkéye-	—
5	Proto-Indo-European	lewk-	bright; to shine; to see

Every word from Proto-Indo-European lewk- →Every word from Proto-Indo-European lowkéye- →Every word from Proto-Italic loukeō →