1. The organism from which a parasite obtains its nutrition and/or shelter.
2. An organism or cell culture in which a virus can replicate itself.
3. The transplant recipient of a tissue or organ graft.

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    A sudden wave of mild or intense body heat caused by rushes of hormonal changes resulting from decreased levels of estrogen. Hot flashes can occur at any time and may last from a few seconds to a half-hour. They are due to blood vessel opening and constricting and a symptom of menopause. Hot flashes are […]

  • Hotel-Dieu

    A name often given to a hospital in France during the Middle Ages. Hotel-Dieu literally means the hotel (of) God. In Paris, the Hôtel-Dieu is a venerable and famed hospital. A hospital can also be a place to take care of inanimate objects and serve as a “repair shop for specified small objects” such as, […]

  • Hounsfield

    1. Godfrey Hounsfield, a key contributor to the creation of the CAT scanner. 2. The unit measuring the brightness of images that appear on a CAT scanner.

  • Hounsfield, Godfrey

    (1919-2004) British electrical engineer whose contributions to the creation of the computerized axial tomography scanner (the CAT scan) won him a share of the 1979 Nobel Prize in Physiology or Medicine in 1979. Hounsfield shared the award with the South African-born scientist Allan M. Cormack (1924-1998) who spent much of his career in the US. […]

  • House

    Hospital. As in house officer, house staff, and house surgeon.

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