CRUCIBLE n.
A vessel or melting pot, composed of some very refractory substance, as clay, graphite, platinum, and used for melting and calcining substances which require a strong degree of heat, as metals, ores, etc.
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.
DAMPER n.
That which damps or checks; as: (a) A valve or movable plate in the flue or other part of a stove, furnace, etc., used to check or regulate the draught of air. (b) A contrivance, as in a pianoforte, to deaden vibrations; or, as in other pieces of mechanism, to check some action at a particular time. Nor did Sabrina's p…
DEAD a.
btained in the distillation of coal tar, and containing phenol, naphthalus, etc. -- Dead plate (Mach.), a solid covering over a part of a fire grate, to prevent the entrance of air through that part. -- Dead pledge, a mortgage. See Mortgage. -- Dead point. (Mach.) See Dead center. -- Dead reckoning (Naut.), the met…