long wave

noun

1. Electricity.,  an electromagnetic wave over 60 meters in length.

2. Geology.,  L wave.

long wave

noun

1. 1. a radio wave with a wavelength greater than 1000 metres

   2. ( as modifier )

      a long-wave broadcast

Other Word Forms

• long-wave adjective

Word History and Origins

Origin of long wave¹

First recorded in 1830–40