Site display: Normal | Text Only

My Collection | About Us | Teachers

Glossary

Prev 2 3 4 5 6 7   View all

D

  • dagger - weapon

    Weapon with a short, double-edged, sharp-pointed blade and a grip, used for stabbing or parrying.

  • Daguerreotype

    Photographs made by the process called daguerreotype, which produces a direct positive image on a silver-coated copper plate. They are often mounted in special cases lined with red velvet or leather.

  • daguerreotype (process)

    Process that produces a direct positive image on a silver-coated copper plate, invented by Louis-Jacques-Mandé Daguerre of France and Joseph-Nicéphore Niepce in the 1830s. In the process, a copper plate is coated with silver iodide and exposed to light in a camera, then fumed with mercury vapour and fixed with common salt in solution.

  • dandy car

    A horse hauled passenger carriage.

  • dandy cart

    A wagon in which a horse travelled to descend an incline, behind a train going down under gravity, after having hauled a train up.

  • data recorder set

    Item used for recording information

  • DDT

    A synthetic pesticide used for controlling insects, especially mosquitoes that carry malaria. Its prolonged use is harmful to the environment, in particular to birds. Now banned from agriculture, it remains in use in some parts of the world.

  • deafness

    A condition where the hearing in both ears in not functional to ordinary levels.

  • death mask

    A cast taken of a person's face after death, usually made from plaster or wax.

  • decomposition

    The slow disintegration of dead organic matter by chemical reaction into simpler elements.

  • deduction mandate

    An authority, signed by the employee, for their employer to make certain deductions from their pay.

  • deeds

    Documents, usually executed under seal, containing a conveyance, especially of real estate. RHDEL2.

  • defibrillator

    A device that delivers a measured electric shock to the heart. Designed to prevent the irregular seizing of muscles in the heart (fibrillation). If the defibrillator is successful, the normal rhythm of the heart resumes.

  • dehydration

    The results of extreme loss of water.

  • dental burnisher

    An instrument for smoothing and polishing the surface or edge of a dental restoration.

  • dental drill

    A rotary power-driven instrument into which cutting points may be inserted. Used to remove decay from teeth.

  • dental elevator

    A dental instrument used to remove teeth or parts of teeth that cannot be gripped with forceps or to loosen teeth and roots before using dental forceps.

  • dental forceps

    Forceps used specifically to remove teeth.

  • dental instrument

    Hand-held tools or implements especially used by dental professionals for the performance of clinical tasks

  • dental instrument set

    Set of dental instruments

Prev 2 3 4 5 6 7   View all