luminol
noun
lu·mi·nol
| \ ˈlü-mə-ˌnȯl
, -ˌnōl
\
, -ˌnōl
\
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