Category: D

  • DPT vaccine

    An obsolete combination of diphtheria and tetanus toxoids and killed pertussis bacilli that is no longer given in pediatric immunizations because of the superiority of DTaP, a vaccine that contains only acellular pertussis.  

  • Diphtheria vaccine

    A vaccination against corynebacterium diphtheriae.  

  • Descending urography

    Urography in which an injected contrast agent is excreted by the kidney and studied by x-ray examination during excretion.  

  • Double-voided urine

    A urine sample voided within 30 min after the patient has emptied the bladder.  

  • Depleted uranium

    The metal remaining after the most active radioisotope has been extracted from uranium. A heavy metal, depleted uranium is used in munitions, e.g., in armor-piercing weapons. Its radioactivity is about 40% that of natural uranium.  

  • Duplex doppler ultrasound

    Doppler ultrasonography that uses a transducer with two functions: pulsed- wave Doppler and B-mode imaging.  

  • Denture ulcer

    An ulcer of the oral mucosa caused by irritation from wearing dentures.  

  • Dentinal tubule

    One of the very small canals in the dentin. These extend from the pulp cavity of the tooth to the enamel and are occupied by odontoblastic processes and occasional nerve filaments.  

  • Dental tubercle

    A small elevation of variable size on the crown of a tooth representing a thickened area of enamel or an accessory cusp.  

  • Deltoid tubercle

    A tubercle on the anterior border of the acromium to which the deltoid muscle attaches.