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  • Dewar

    All-metal container designed for the movement of small quantities of cryogenic liquids within a facility; not designed or intended to meet U.S. Department of Transportation (DOT) requirements for the transporation of cryogenic materials

  • dextrose

    A preparation obtained by hydrolysis of starch, used as an intravenous nutrient.

  • diabetes mellitus

    A systemic disease affecting many organs, including the pancreas, whose failure to secrete insulin causes an inability to metabolize carbohydrate and consequent elevations in blood sugar.

  • diabetic ketoacidosis

    A condition resulting from uncontrolled diabetes, characterized by excessive thirst, hunger, urination, vomiting, and sometimes coma, with the production of ketones in metabolism as well as an excess of organic acids.

  • diagnosis

    Distinguishing one disease from another; the determination of the nature of a disease.

  • diaphoresis

    Profuse perspiration.

  • diaphragm

    A large skeletal muscle that is a major component in the act of respiration and that separates the chest cavity from the abdominal cavity.

  • diaphysis

    The shaft of a long bone.

  • diarrhea

    An increased frequency of defecation with discharge of watery or loose stools.

  • diastole

    The period of ventricular relaxation during which the ventricles passively fill with blood.

  • diastolic blood pressure

    The blood pressure obtained during ventricular diastole; the lowest arterial pressure between two systolic peaks.

  • diazepam

    A drug used in the treatment of seizures (trade name

  • Dielectric

    Material that is a poor conductor of electricity; usually applied to tools that are used to handle energized electrical wires or equipment

  • Dielectric

    Material that is a poor conductor of electricity; usually applied to tools that are used to handle energized electrical wires or equipment

  • Differential Manometer

    Device whose primary application is to reflect the difference in pressures between two points in a system.

  • diffusion

    The passage of fluid and chemicals through a membrane.

  • digitalis

    A drug used in the treatment of congestive heart failure and certain atrial dysrhythmias.

  • digitalization

    The process of giving digitalis to the point where the maximum therapeutic effects are achieved without untoward side effects.

  • digitoxicity

    Toxicity from digitalis, which may be manifested by anorexia, nausea, vomiting, yellow vision, or cardiac dysrhythmias.

  • Dike

    Temporary or permanent barrier that prevents liquids from flowing into certain areas or that directs the flow as desired.

  • Dike

    Temporary or permanent barrier that prevents liquids from flowing into certain areas or that directs the flow as desired.

  • dilation

    The condition of being dilated or stretched beyond normal dimensions.

  • Dilaudid

    A trade name for dihydromorphinone, a narcotic analgesic.

  • Dimensioning

    Indicating or determining size and position in space

  • Dimensioning

    Indicating or determining size and position in space

  • diplopia

    Double vision.

  • Direct attack

    "Putting the wet stuff on the red stuff." A form of fire attack in which hoses are advanced to the fire inside a structure and hose streams directed at the burning materials.

  • Direct Attack

    Any treatment applied directly to burning fuel such as wetting, smothering, or chemically quenching the fire or by physically separating the burning from unburned fuel.

  • direct current (DC)

    An electric current that flows at a steady rate in a single direction.

  • direct current (DC) electric shock

    An electric shock delivered with a defibrillator to the heart directly or through the chest wall to terminate certain dysrhythmias, such as ventricular fibrillation, or to convert various tachyarrhythmias.

  • Direct Pumping System

    Water supply system supplied directly by a system of pumps rather than elevated storage tanks.

  • disc

    The cartilaginous material that separates each of the vertebrae.