Where does “タキオン” come from?

タキオン (Japanese) comes from English tachyon, from English tachy, from English tachy-, from Ancient Greek ταχύς, from Proto-Indo-European dʰn̥gʰ-, from Proto-Indo-European dʰengʰ- — to cover; to overcast.

タキオン (Japanese): tachyon

Definitions

tachyon

Ancestry of “タキオン”, step by step

Step	Language	Word	Meaning
1	English	tachyon	A hypothetical particle that travels faster than...
2	English	tachy	Tachycardia; Tachypnoea
3	English	tachy-	fast
4	Ancient Greek	ταχύς	swift, quick, fast, rapid; In a short time: soon
5	Proto-Indo-European	dʰn̥gʰ-	—
6	Proto-Indo-European	dʰengʰ-	to cover; to overcast

Every word from Proto-Indo-European dʰengʰ- →Every word from Proto-Indo-European dʰn̥gʰ- →Every word from Ancient Greek ταχύς →