Category: R

  • Rolled bandage

    A bandage in the form of a long strip of cloth which is rolled up from one or both ends.  

  • Roentgenology

    The study of X-rays and their use in medicine. The study of the applications of X-rays (roentgen rays) in medicine.  

  • Roentgen

    A unit of radiation used to measure the exposure of someone or something to X-rays or gamma rays. A unit of measure; the amount of radiation that produces one electrostatic unit of electricity in 1 cubic centimeter of air. A unit of exposure dose of X- or gamma-radiation equal to the dose that will produce…

  • Rodent ulcer

    A malignant tumour on the face. A slow-growing malignant tumor of the face, usually at the edge of the eyelids, lips, or nostrils. Rodent ulcers occur in middle age or later; if untreated, they destroy skin muscle and bone but they do not spread to other parts of the body. Individuals persistently exposed to hot…

  • River blindness

    Blindness caused by larvae getting into the eye in cases of onchocerciasis.  

  • Risus sardonicus

    A twisted smile which is a symptom of tetanus. An abnormal grinning expression resulting from involuntary prolonged contraction of facial muscles, as seen in tetanus. A twisted smile, often called a sardonic grin, results from muscle spasms and is observed in certain cases of tetanus.  

  • Rise

    To go up.  

  • Ripple bed

    A type of bed with an air-filled mattress divided into sections, in which the pressure is continuously being changed so that the body can be massaged and bedsores can be avoided.  

  • Rinse out

    To lightly wash the inside of something to make it clean, e.g. to get rid of soap.  

  • Rinne’s test

    A hearing test in which a tuning fork is hit and its handle placed near the ear, to test for air conduction, and then on the mastoid process, to test for bone conduction. It is then possible to determine the type of lesion which exists by finding if the sound is heard for a longer…