from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A glycoside of hydroquinone, found in bearberry, that is used to treat some diseases of the urinary tract
from The Century Dictionary and Cyclopedia
- n. A glucoside (C24H32O14 + H2O) obtained from the bearberry (Arctostaphylos Uva-ursi) and other plants of the heath family.
Sorry, no etymologies found.
One of the active biochemical constituents in urva ursi is arbutin.
_Arctostaphylos Uva Ursi_, containing the glucoside arbutin, myrosin from black mustard-seed, gold lac (_Cheirantus cheiri_) and crotin from croton seeds.
Neither emulsin, arbutin nor crotin have any marked hydrolytic action on castor oil, but myrosin is about half as active as castor seeds, except in the presence of potassium myronate, when no decomposition occurs.
Flavonoids. saponins, tannins, and arbutin as constituents of leaves of Viburnum tinus, V. opulus and V. lantana