Noun
luminol (uncountable)
(organic chemistry) The compound 5-amino-2,3-dihydro-1,4-phthalazinedione that exhibits blue chemiluminescence when mixed with an appropriate oxidizing agent
Luminol glows blue when it contacts even a tiny trace of blood. Source: Internet
Steinhauser held the key in the form of a syringe that is used to inject the luminol into an Erlenmeyer flask. Source: Internet
One way to make blood glow is to use a substance called luminol. Source: Internet