luminol

noun
lu·​mi·​nol | \ ˈlü-mə-ˌnȯl How to pronounce luminol (audio) , -ˌnōl How to pronounce luminol (audio) \

Medical Definition of luminol

: an almost white to yellow crystalline compound C8H7N3O2 that gives a brilliant bluish luminescence when it is treated in alkaline solution with an oxidizing agent (as hydrogen peroxide) and that is used in chemical analysis

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a period when something is suspended

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