long wave

American  

noun

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

2. Geology. L wave.

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long wave British  

noun

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

   2. ( as modifier )

      a long-wave broadcast

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Other Word Forms

• long-wave
  adjective

Etymology

Origin of long wave

First recorded in 1830–40

Example Sentences

See Examples For:

long wave

A massive aqua sofa in the living room that looks like a long wave because it faces the water.

From The Wall Street Journal ● Jul. 7, 2026

The U.S. is still in the early innings of a long wave upturn in productivity growth—driven in large part by demographic necessity, writes Richard de Chazal, William Blair’s macro analyst.

From Barron's ● Jan. 8, 2026

The long-term future of the BBC's long wave output is far from certain.

From BBC ● Sep. 4, 2023

Among the long wave services that have come and gone over the years was Atlantic 252.

From BBC ● Sep. 4, 2023

And then a long wave of warmth crossed the small town.

From "The Martian Chronicles" by Ray Bradbury