Where does “ra đi ô” come from?

ra đi ô (Vietnamese) comes from French radio, from French radiotélégraphiste, from French télégraphiste, from French télégraphe, from French télé-, from Ancient Greek τῆλε, from Latin commūnicāre, from Latin commūnis — whale, sea monster; abyss.

ra đi ô (Vietnamese): radio

Definitions

radio

Ancestry of “ra đi ô”, step by step

Step	Language	Word	Meaning
1	French	radio	radio, tuner
2	French	radiotélégraphiste	radiotelegraphist
3	French	télégraphiste	telegraphist
4	French	télégraphe	telegraph
5	French	télé-	tele-
6	Ancient Greek	τῆλε	far off, afar, far away
7	Latin	commūnicāre	—
8	Latin	commūnis	common, commonplace, ordinary, general, universal, shared, shared alike, of both sides, belonging to two or more together
9	Old Latin	com(m)oinis	—
10	Proto-Italic	kommoinis	common
11	Proto-Indo-European	ḱom-moy-ni-	held in common
12	Proto-Indo-European	ḱóm	beside, near, by, with
13	Proto-Indo-European	ḱe	Deictic particle, here; Post-positional...
14	Middle English	kyt	—
15	Russian	кит	whale; genitive plural of ки́та
16	Old Church Slavonic	китъ	whale
17	Ancient Greek	κῆτος	whale, sea monster; abyss

Every word from Ancient Greek κῆτος →Every word from Old Church Slavonic китъ →Every word from Russian кит →