Where does “γεια” come from?

γεια (Greek) comes from Koine Greek ὑγεία, from Ancient Greek Ὑγίεια, from Ancient Greek -ῐ́ᾱ, from Proto-Indo-European -íh₂, from Proto-Indo-European -h₂ — Creates collective nouns, which refer to groups...

γεια (Greek): hi, hello; bye; cheers, your health

Definitions

hi, hello; bye; cheers, your health

Ancestry of “γεια”, step by step

Step	Language	Word	Meaning
1	Koine Greek	ὑγεία	—
2	Ancient Greek	Ὑγίεια	health
3	Ancient Greek	-ῐ́ᾱ	{{l\|en\|-ia}}; "suffix forming abstract feminine...
4	Proto-Indo-European	-íh₂	—
5	Proto-Indo-European	-h₂	Creates collective nouns, which refer to groups...

Every word from Proto-Indo-European -h₂ →Every word from Ancient Greek -ῐ́ᾱ →Every word from Ancient Greek Ὑγίεια →