Definify.com
Webster 1913 Edition
Murexan
Mu-rex′an
,Noun.
[From
Murexide
.] (Chem.)
A complex nitrogenous substance obtained from murexide, alloxantin, and other ureids, as a white, or yellowish, crystalline which turns red on exposure to the air; – called also
uramil
, dialuramide
, and formerly purpuric acid
.