Definition of "luminol" [luminol]

• A chemical that exhibits blue chemiluminescence when mixed with an appropriate oxidizing agent, molecular formula C8H7N3O2. (noun)

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• "The oxygen-carrying protein in the blood called hemoglobin could be exposed using a chemical mixture known as luminol."
• "And when they went in there the other night with that luminol, which is the chemical that you spray, where you think there is some blood, you turn the lights down, you spray it, and then it illumines a bright blue for about 30 seconds, that's when they found it."
• "The luminol is a presumptive test for the presence of blood."