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Glossary

Showing 571-580 out of 1175 Terms

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  • Horner syndrome

    (...SIN-drome)

    A condition in which one side of the face is flushed, does not produce sweat, and has a constricted pupil and drooping eyelid. It can be caused by an injury to, or paralysis of, nerves in the neck, or by a tumor.

  • Hospice

    HOS-pis

    A program that gives special care to people who are near the end of life and have stopped treatment to cure or control their disease. Hospice offers physical, emotional, social, and spiritual support for patients and their families. The main goal of hospice care is to control pain and other symptoms of illness so patients can be as comfortable and alert as possible. It is usually given at home, but may also be given in a hospice center, hospital, or nursing home.

  • Host cell

    (... sel)

    A cell that is infected by a virus or another type of microorganism.

  • Human leukocyte antigen

    HYOO-mun LOO-koh-site AN-tih-jen

    Antigens that appear on white blood cells as well as cells of almost all other tissues. By typing for HL-A antigens, donors and recipients of white blood cells, platelets, and organs can be "matched" insuring good performance and survival of transfused and transplanted cells.

  • Human leukocyte antigens

    HYOO-mun LOO-koh-site AN-tih-jen

    Antigens that appear on white blood cells as well as cells of almost all other tissues. By typing for HL-A antigens, donors and recipients of white blood cells, platelets, and organs can be "matched" insuring good performance and survival of transfused and transplanted cells.

  • Hydration

    (hy-DRAY-shun)

    The process of combining with water. In medicine, the process of giving fluids needed by the body.

  • Hydrocephalus

    HY-droh-SEH-fuh-lus

    The abnormal buildup of cerebrospinal fluid in the ventricles of the brain.

  • Hydrocortisone

    (HY-droh-KOR-tih-sone)

    A drug used to relieve the symptoms of certain hormone shortages and to suppress an immune response.

  • Hyper

    Prefix meaning ""more than"" normal.

  • Hyperactivity

    (HY-per-ak-TIH-vih-tee)

    A higher than normal level of activity. Hyperactivity can be used to describe the increased action of a body function, such as hormone production, or behavior. A person who is hyperactive may seem to be always moving or fidgeting, impulsive, unable to concentrate, and talking too much.