Where does “llampó” come from?

llampó (Catalan) comes from Catalan llamp, from Catalan llampar, from Latin lampō, from Ancient Greek λάμπω, from Ancient Greek κτείς, from Proto-Indo-European *pḱtḗn, from Proto-Indo-European peḱ- — to pluck; livestock; wealth.

llampó (Catalan): lightning that is seen but not heard; heat lightning

Definitions

lightning that is seen but not heard; heat lightning

Ancestry of “llampó”, step by step

Step	Language	Word	Meaning
1	Catalan	llamp	lightning
2	Catalan	llampar	to strike by lightning
3	Latin	lampō	to shine
4	Ancient Greek	λάμπω	to shine, be bright, give light; to be loud,...
5	Ancient Greek	κτείς	comb; rake; horn of a lyre
6	Proto-Indo-European	*pḱtḗn	comb
7	Proto-Indo-European	peḱ-	to pluck; livestock; wealth

Every word from Proto-Indo-European peḱ- →Every word from Proto-Indo-European *pḱtḗn →Every word from Ancient Greek κτείς →