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Glossary

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D

  • dilatometer

    Devices for measuring thermal expansion and dilation of liquids or solids.

  • dilator

    An instrument for expanding something or a part of something. In surgery this is often a passageway or an organ.

  • dining car

    A railway carriage equipped for dining.

  • dinner fork

    Large-size forks in a place setting, used for consuming the main course of a meal.

  • dinner plate

    Plates for holding an individual portion of the main course of a meal; often circular, but sometimes oval, octagonal, or other form.

  • diorama

    A model with three-dimensional objects, often sculpture, with a realistic painted background.

  • diphtheria

    An acute highly contagious infection, generally affecting the throat but occasionally other mucous membranes and the skin. Diphtheria has been largely eradicated due to world-wide vaccination efforts.

  • diphtheria test

    trial term S&H

  • disease

    An alteration in the normal condition of a body part, organ or system of an individual, interrupting the performance of vital functions. This can result from various causes. Each disease is characterized by an identifiable group of symptoms.

  • diseases of affluence

    A phrase that refers to diseases that are considered to be a result of increasing wealth within a society. Unlike diseases of poverty, they tend to be non-infectious and include coronary heart disease, type-2 diabetes, certain cancers and clinical conditions such as obesity. However, as habits change within a society, strict definitions of what are diseases of affluence often change.

  • diseases of old age

    Refers to a group of diseases whose appearance is more common in older people and therefore on the increase in societies where individuals are living longer. Examples include arthritis, Alzheimer’s disease and osteoporosis. The treatment and care of older people is known as geriatric medicine.

  • diseases of poverty

    A phrase that refers to diseases that are seen to be more common in conditions of poverty. They are often contagious and can be associated with overcrowding, malnutrition or environmental and industrial factors. Three major diseases of poverty are AIDS, malaria and tuberculosis.

  • dish - vessel

    Any of various broad, relatively shallow, open vessel with a flat bottom, concave sides, and nearly level rim, sometimes having a cover; made of pottery, glass, metal, wood or another material and used for many purposes, especially for holding or serving food. In modern usage it is typically reserved for vessels at a dining table used for serving or holding food other than the round, flat or very shallow object used by the person dining, which is called a "plate"; however, formerly the plate was also called a "dish."

  • dishes

    Open, often shallow, containers, sometimes having a cover; made of pottery, glass, metal, wood or the like and used for various purposes, especially for holding or serving food.

  • disinfectant

    Material used for killing germs, bacteria, or spores.

  • disinfectant bottle

    Bottle containing disinfectant.

  • disinfection

    A process of cleaning that kills most micro-organisms.

  • dislocation

    The movement of a bone from its normal position resulting in loss of contact between the bone and the joint surface.

  • dispenser

    An object, machine or a person that distributes something.

  • dispensing pot

    pot used to contain ointments, medications, perfumes

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