Where does “post office telephone system” come from?
post office telephone system (English) comes from English telephone, from French téléphone, from French télé-, from Ancient Greek τῆλε, from Latin commūnicāre, from Latin commūnis, from Old Latin com(m)oinis, from Proto-Italic kommoinis — to bend; curve; arch; vault; to bow, bend, arch,...
Ancestry of “post office telephone system”, step by step
post office telephone system traces back through 3 separate lines of ancestry.