black light


Definition of black light 

1 : invisible ultraviolet light

2 : a lamp that radiates black light

Examples of black light in a Sentence

Recent Examples on the Web

Never mind that blood doesn’t actually luminesce under black light; the phosphorescent glow is haunting, and the process of surfaces being gradually wiped clean, erasing all evidence of what just happened, is unsettling. Tasha Robinson, The Verge, "What Keeps You Alive shows the importance of art in horror films," 24 Aug. 2018 Shortly after opening, Sky Zone Greenfield will offer glow evenings when the black lights will come on and shirts and balls will glow as kids and adults bounce to music. Jane Ford-stewart, Milwaukee Journal Sentinel, "Five things to know before you fly at the new Sky Zone trampoline park in Greenfield," 26 June 2018 The lighting of the show will be very modern, Hewes said, utilizing LEDs, black lights and UV lights. Emily Sorensen, Pomerado News, "PowPAC's 'Romeo and Juliet' opens Friday," 3 July 2018 In the years since, neighbors have worn out vacuum belts, spent untold amounts of money on black lights, and become amateur experts on homeopathic pesticides. Vinny Vella,, "$90,000 state grant to help study infestation of Chesco mushroom flies," 5 June 2018 Holes are lit with black lights and decorated with glowing trees, animals and a jungle theme. Wendy Killeen, azcentral, "Indoor playgrounds, trampoline parks and places in Phoenix kids can play and stay cool," 24 May 2018 Participants are encouraged to bring black lights to search for scorpions, which are able to blend into their surroundings and are difficult to spot with regular flashlights. Laura Latzko, azcentral, "Experience fishing, archery, mountain biking or scorpion hunting at Arizona parks," 25 May 2018 The Jingle and North Star options include black light keychain chargers to make the putty glow. Amy Schwabe, Milwaukee Journal Sentinel, "50 top holiday gifts for kids (and adults), recommended by local, independent toy stores," 7 Dec. 2017 The decor is Spartan, mostly some fluorescent paint and black lights. Rene Rodriguez, miamiherald, "Think South Beach is crazy now? Here's what the club scene was like in 1994 | Miami Herald," 5 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'black light.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of black light

1913, in the meaning defined at sense 1

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Last Updated

21 Nov 2018

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Time Traveler for black light

The first known use of black light was in 1913

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Rhyming Dictionary: Words that rhyme with black light

Comments on black light

What made you want to look up black light? Please tell us where you read or heard it (including the quote, if possible).


to make faulty or ineffective

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