Where does “ἀγαλαξία” come from?

ἀγαλαξία (Ancient Greek) comes from Ancient Greek ἀγάλακτος, from Ancient Greek ἀ-, from Proto-Hellenic hə-, from Proto-Indo-European sm̥-, from Proto-Indo-European sem- — together, one.

Ancestry of “ἀγαλαξία”, step by step

StepLanguageWordMeaning
1Ancient Greekἀγάλακτος
2Ancient Greekἀ-The alpha privativum, used to make words that...
3Proto-Hellenichə-same; together
4Proto-Indo-Europeansm̥-one; with, together
5Proto-Indo-Europeansem-together, one

Words derived from “ἀγαλαξία

Every word from Proto-Indo-European sem-Every word from Ancient Greek ἀ-Every word from Proto-Indo-European sm̥-