-ˌnȯl, -ˌnōl noun
( -s )
Etymology: lumin- + -ol
: an almost white to yellow crystalline compound C 8 H 7 N 3 O 2 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 (as in testing for blood spots); 5-amino-2, 3-dihydro-1, 4-phthalazine-dione