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ULTRARED Definition & Meaning | Dictionary.com

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ultrared

[ uhl-truh-red ]

noun

  1. (not in technical use) infrared.


ultrared

/ ˌʌltrəˈrɛd /

adjective

  1. an obsolete word for infrared
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of ultrared1

First recorded in 1865–70; ultra- + red 1
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Example Sentences

Objects in the outer solar system tend to be red, caused by the chemical reactions induced by radiation, but the cold classicals are even redder — ultrared, astronomers say.

She’s abandoned her ultrared lipstick and nail polish and her tumed-up collars and has taken up moderate pinks and going on diets, and grooming.

The extension, too, of the visible solar spectrum into the ultra-violet by Corun, Mascart, and others, adds much to our knowledge of the sun; while the photographs of Abney in the ultrared increase our information in a direction less expected and certainly less easy of attainment.

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