Where does “abysalny” come from?

abysalny (Polish) comes from Polish abysal, from English abyssal, from Medieval Latin abyssalis, from Latin abyssus, from Ancient Greek ἄβυσσος, from Ancient Greek ἀ-, from Proto-Hellenic hə-, from Proto-Indo-European sm̥- — together, one.

Ancestry of “abysalny”, step by step

StepLanguageWordMeaning
1Polishabysal
2EnglishabyssalBelonging to, or resembling, an abyss;...
3Medieval Latinabyssalis
4Latinabyssusan abyss
5Ancient Greekἄβυσσοςbottomless, boundless; unfathomable; bottomless...
6Ancient Greekἀ-The alpha privativum, used to make words that...
7Proto-Hellenichə-same; together
8Proto-Indo-Europeansm̥-one; with, together
9Proto-Indo-Europeansem-together, one
Every word from Proto-Indo-European sem-Every word from Ancient Greek ἀ-Every word from Proto-Indo-European sm̥-