Where does “Χριστούγεννα” come from?

Χριστούγεννα (Greek) comes from Greek Χριστός, from Ancient Greek Χριστός, from Ancient Greek χρίω, from Proto-Indo-European gʰrēy-, from Proto-Indo-European gʰer- — to rub; to stroke; to grind.

Χριστούγεννα (Greek): Christmas

Definitions

Christmas

Ancestry of “Χριστούγεννα”, step by step

Χριστούγεννα traces back through two separate lines of ancestry.

via Greek Χριστός

Step	Language	Word	Meaning
1	Greek	Χριστός	Christ
2	Ancient Greek	Χριστός	anointed; messiah; annointed, the annointed one,...
3	Ancient Greek	χρίω	to rub or smear (especially the body) with oil or unguents; to anoint
4	Proto-Indo-European	gʰrēy-	to smear; to paint, streak, smear
5	Proto-Indo-European	gʰer-	to rub; to stroke; to grind

via Greek γέννα

Step	Language	Word	Meaning
1	Greek	γέννα	birth; 2nd person singular imperfective...
2	Byzantine Greek	γέννα	"Ancient Greek"; "Medieval" "Greek"

Words derived from “Χριστούγεννα”

Every word from Proto-Indo-European gʰer- →Every word from Proto-Indo-European gʰrēy- →Every word from Ancient Greek χρίω →