Where does “εισπνέω” come from?

εισπνέω (Greek) comes from Ancient Greek εἰσπνέω, from Ancient Greek εἰσ-, from Ancient Greek εἰς, from Proto-Hellenic ens, from Proto-Indo-European h₁én — in.

εισπνέω (Greek): to breathe in, inhale

Definitions

to breathe in, inhale

Ancestry of “εισπνέω”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	εἰσπνέω	to breathe upon
2	Ancient Greek	εἰσ-	into
3	Ancient Greek	εἰς	into
4	Proto-Hellenic	ens	—
5	Proto-Indo-European	h₁én	in

Every word from Proto-Indo-European h₁én →Every word from Proto-Hellenic ens →Every word from Ancient Greek εἰς →