blue light

[bloo lahyt]

Phonetic (Standard)IPA

noun

a band of the visible light spectrum that has a shorter wavelength and produces higher energy than other colors of light: occurring in sunlight and emitted by electronic devices that use LED technology.
American History, Usually Disparaging.��Also Blue Light a member of a faction of the American Federalist party considered disloyal for opposing the War of 1812: so called from the claim that they flashed blue light signals to alert the British to the presence of blockade runners.

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Word History and Origins

Origin of blue light¹

First recorded in 1810–15

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Example Sentences

Examples have not been reviewed.

Just make sure you do not play on your phone or a video game - the blue light wakes us up and the activity is stimulating.

From

Smoke particles in the atmosphere scatter blue light more, leaving oranges and reds dominant.

From

Now the retired director of photography is fielding orders for the BlueChirper after teaching himself how to make a circuit board that can emit the annoying sound and flash a blue light.

From

He had initially attracted the attention of officers while sitting in the vehicle on Moorclose Road in Workington, before then heading south towards Whitehaven where the blue light pursuit began.

From

I don’t want that blue light on me.

From

blue lias blueline

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