radiotelephone noun 2verb 1forms 3 noun2 •A device that allows two-way communication by means of a radio.The patrol cop with the radiotelephone remained outside the bar, as the rest of the cops entered the club shouting: "Police! We're taking the place!" — 2006 •Synonym of mobile phone verb1 •To communicate by means of such a device. formsradiotelephoned · radiotelephoning · radiotelephones