Definify.com
Webster 1913 Edition
Rubian
Ru′bi-an
,Noun.
[L.
rubia
madder, fr. rubeus
red.] (Chem.)
One of several color-producing glycosides found in madder root.
Definition 2024
rubian
rubian
English
Noun
rubian (uncountable)
- (organic chemistry) One of several colour-producing glycosides found in madder root.