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Rubiacin
- A substance found in madder root, and probably identical with ruberythrinic acid.
Rubian
- One of several color-producing glycosides found in madder root.
Rubianic
- pertaining to, or derived from, rubian; specifically, designating an acid called also ruberythrinic acid.
Rubican
- Colored a prevailing red, bay, or black, with flecks of white or gray especially on the flanks; -- said of horses.
Rubicundity
- The quality or state of being rubicund; ruddiness.
Rubidic
- Of or pertaining to rubidium; containing rubidium.
Rubidine
- A nitrogenous base homologous with pyridine, obtained from coal tar as an oily liquid, C11H17N; also, any one of the group od metameric compounds of which rubidine is the type.
Rubific
- Making red; as, rubific rays.