Where does “celticus” come from?

celticus (Latin) comes from Latin Celta, from Latin Celtae, from Ancient Greek Κελτοί, from Proto-Celtic kel-to, from Proto-Indo-European ḱelh₂- — to pierce, strike; to stick; prick; stab.

celticus (Latin): Alternative letter-case form of Celticus; Celtic

Definitions

Alternative letter-case form of Celticus; Celtic

Ancestry of “celticus”, step by step

Step	Language	Word	Meaning
1	Latin	Celta	a Celt
2	Latin	Celtae	the Celts
3	Ancient Greek	Κελτοί	the Celts
4	Proto-Celtic	kel-to	—
5	Proto-Indo-European	ḱelh₂-	to pierce, strike; to stick; prick; stab

Every word from Proto-Indo-European ḱelh₂- →Every word from Proto-Celtic kel-to →Every word from Ancient Greek Κελτοί →