noun
Usage: usually capitalized H
: an electromagnetic wave produced by the oscillation of electricity in a conductor (as a radio antenna) and of a length ranging from a few millimeters to many kilometers
noun
Usage: usually capitalized H
: an electromagnetic wave produced by the oscillation of electricity in a conductor (as a radio antenna) and of a length ranging from a few millimeters to many kilometers
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012