DAGUERREOTYPE n.
An early variety of photograph, produced on a silver plate, or copper plate covered with silver, and rendered sensitive by the action of iodine, or iodine and bromine, on which, after exposure in the camera, the latent image is developed by the vapor of mercury.
DAMASK a.
generally called damson. -- Damask rose (Bot.), a large, pink, hardy, and very fragrant variety of rose (Rosa damascena) from Damascus. "Damask roses have not been known in England above one hundred years." Bacon. -- Damask steel, or Damascus steel, steel of the kind originally made at Damascus, famous for its hardn…
DEXTROSE n.
A sirupy, or white crystalline, variety of sugar, C6H12O6 (so called from turning the plane of polarization to the right), occurring in many ripe fruits. Dextrose and levulose are obtained by the inversion of cane sugar or sucrose, and hence called invert sugar. Dextrose is chiefly obtained by the action of heat and ac…
DICTION n.
, disposition, and application of words in discourse, with regard to clearness, accuracy, variety, etc.; mode of expression; language; as, the diction of Chaucer's poems. His diction blazes up into a sudden explosion of prophetic grandeur. De Quincey.