noun
: the part of the range of frequencies of electromagnetic waves assigned to broadcasting stations ranging in the United States from 550 to 1600 kilocycles per second for AM radio stations
noun
: the part of the range of frequencies of electromagnetic waves assigned to broadcasting stations ranging in the United States from 550 to 1600 kilocycles per second for AM radio stations
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012