Where does “asphyxy” come from?

asphyxy (English) comes from New Latin asphyxia, from Ancient Greek ἀσφυξία, from Ancient Greek ἀ-, from Proto-Hellenic hə-, from Proto-Indo-European sm̥-, from Proto-Indo-European sem- — together, one.

asphyxy (English): asphyxiation, typically resulting in death;...

Definitions

asphyxiation, typically resulting in death;...

Ancestry of “asphyxy”, step by step

Step	Language	Word	Meaning
1	New Latin	asphyxia	—
2	Ancient Greek	ἀσφυξία	stopping of the pulse
3	Ancient Greek	ἀ-	The alpha privativum, used to make words that...
4	Proto-Hellenic	hə-	same; together
5	Proto-Indo-European	sm̥-	one; with, together
6	Proto-Indo-European	sem-	together, one

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