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continuous wave

[ kuhn-tin-yoo-uhs weyv ]
/ kənˈtɪn yu əs ˈweɪv /
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noun Telecommunications.
an electromagnetic wave of constant amplitude and frequency: used to carry information by being modulated, as in radio or television, or by being interrupted as in radiotelegraphy. Abbreviation: CW
adjective
Also continuous-wave . noting a machine or device that functions through a constant and controlled output of waves, as of light from a laser, sound from an ultrasound, or radio energy from radar. Abbreviation: CW
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Origin of continuous wave

First recorded in 1910–15
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

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