Where does “-λογία” come from?

-λογία (Greek) comes from Ancient Greek λέγω, from Proto-Indo-European leǵ- — to gather, collect, with derivatives meaning to...

-λογία (Greek): Suffix denoting the study of something, or the...

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	λέγω	I put in order, arrange, gather; I choose, count,...
2	Proto-Indo-European	leǵ-	to gather, collect, with derivatives meaning to...

-λογία — Etymology, Origin & Word History | Etymology Explorer