Where does “bradypnea” come from?

bradypnea (English) comes from English -pnea, from Ancient Greek -πνοια, from Ancient Greek πνοή, from Ancient Greek -ή, from Ancient Greek -ᾱ, from Proto-Indo-European -éh₂.

bradypnea (English): A slow breathing rate, rhythm, or tidal volume

Definitions

A slow breathing rate, rhythm, or tidal volume

Ancestry of “bradypnea”, step by step

Step	Language	Word	Meaning
1	English	-pnea	breathing, respiration
2	Ancient Greek	-πνοια	—
3	Ancient Greek	πνοή	breath
4	Ancient Greek	-ή	suffix of feminine nouns in the [[Appendix:Ancient Greek first declension
5	Ancient Greek	-ᾱ	nominal suffix
6	Proto-Indo-European	-éh₂	—

Every word from Proto-Indo-European -éh₂ →Every word from Ancient Greek -ή →Every word from Ancient Greek -ᾱ →