Where does “телеграфный” come from?
телеграфный (Russian) comes from Russian телегра́ф, from French télégraphe, from French télé-, from Ancient Greek τῆλε, from Latin commūnicāre, from Latin commūnis, from Old Latin com(m)oinis, from Proto-Italic kommoinis — resin, gum; to say, speak.
телеграфный (Russian): telegraph; telegraphic
Ancestry of “телеграфный”, step by step