The final product in the action of light on visual purple. It is reconverted into visual purple by the regenerating action of the choroidal epithelium.

A powder prepared from chalk by pulverizing and repeated washings, used as a white pigment. / Any white wine of Spanish origin.

Synonym of phlegmasia alba dolens

A white crystalline powder obtained by reduction from indigo blue, and by oxidation easily changed back to it.

(UK, historical, obsolete slang) The English shilling of 12 pence, as opposed to the Irish 'black hog' shilling of 13 pence

plural of white hog

plural of white radish

Synonym of daikon

plural of white bread

Basic bismuth nitrate, or bismuth subchloride; used chiefly as a cosmetic. / A variety of white lead blued with indigo or Berlin blue.