Where does “*abīsmus” come from?

*abīsmus (Vulgar Latin) comes from Late Latin abyssus, from Ancient Greek ἄβυσσος, from Ancient Greek ἀ-, from Proto-Hellenic hə-, from Proto-Indo-European sm̥-, from Proto-Indo-European sem- — together, one.

Ancestry of “*abīsmus”, step by step

StepLanguageWordMeaning
1Late Latinabyssusa bottomless gulf; an abyss
2Ancient Greekἄβυσσοςbottomless, boundless; unfathomable; bottomless...
3Ancient Greekἀ-The alpha privativum, used to make words that...
4Proto-Hellenichə-same; together
5Proto-Indo-Europeansm̥-one; with, together
6Proto-Indo-Europeansem-together, one

Words derived from “*abīsmus

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