noun
: modulation of the amplitude of a radio carrier wave in accordance with the strength of the audio or other signal ; also : a broadcasting system using such modulation — abbr. AM ; compare frequency modulation
noun
: modulation of the amplitude of a radio carrier wave in accordance with the strength of the audio or other signal ; also : a broadcasting system using such modulation — abbr. AM ; compare frequency modulation
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012