noun.
In old chem., a yellowish or reddish impure oxid of some of the metals: as, crocus antimonii or crocus metallorum, an impure oxid of antimony obtained by deflagration of natural sulphid of antimony with saltpeter; crocus Martis, oxid of iron left on heating sulphate of iron to redness in the air; crocus Veneris, red oxid of copper obtained by heating copper in the air.
noun.
A plant of the genus Crocus.
noun.
A genus of beautiful iridaceous plants, consisting of many hardy species, some of which are among the commonest ornaments of gardens.
noun.
Saffron, obtained from plants of the genus Crocus. See saffron.
noun.
A polishing-powder prepared from crystals of sulphate of iron, calcined in crucibles.