Where does “atlantoepistrophic” come from?

atlantoepistrophic (English) comes from English atlanto-, from Latin Ātlās, from Ancient Greek Ἄτλας, from Ancient Greek ἀ-, from Proto-Hellenic hə-, from Proto-Indo-European sm̥-, from Proto-Indo-European sem- — together, one.

Ancestry of “atlantoepistrophic”, step by step

StepLanguageWordMeaning
1Englishatlanto-atlas
2LatinĀtlāsthe Titan Atlas
3Ancient GreekἌτλαςthe ‘Bearer’ of Heaven; Atlas; the 'Bearer' of...
4Ancient Greekἀ-The alpha privativum, used to make words that...
5Proto-Hellenichə-same; together
6Proto-Indo-Europeansm̥-one; with, together
7Proto-Indo-Europeansem-together, one
Every word from Proto-Indo-European sem-Every word from Ancient Greek ἀ-Every word from Proto-Indo-European sm̥-