Where does “ταχύτητα” come from?

ταχύτητα (Greek) comes from Greek -ύτητα, from Ancient Greek -τητᾰ, from Ancient Greek -τής, from Ancient Greek πεῖρα, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

ταχύτητα (Greek): speed, velocity; swiftness, alacrity; speed, gear

Definitions

speed, velocity; swiftness, alacrity; speed, gear

Ancestry of “ταχύτητα”, step by step

Step	Language	Word	Meaning
1	Greek	-ύτητα	Alternative form of -ότητα; -ity, -ness
2	Ancient Greek	-τητᾰ	—
3	Ancient Greek	-τής	Appended to verbs to form agent nouns
4	Ancient Greek	πεῖρα	trial, experiment, attempt
5	Proto-Indo-European	per-	before, in front; first; to go through
6	Proto-Indo-European	pr̥tós	passed , crossed

Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Ancient Greek -τής →