Category: R

  • Rhonchus (pi., rhonchi)

    Rale or rattling in the throat, especially when it resembles snoring. Dry rattling in the throat or bronchus caused by partial obstruction. An unusual sound in the chest, heard through a stethoscope, caused by a partial blockage in the bronchi. Rhonchi, abnormal sound heard through a stethoscope, usually during expiration, as air passes through narrowed…

  • Reed-Sternberg cells

    Giant connective tissue cells with one or two large nuclei that are characteristic of Hodgkin’s disease. A giant, malignant, multinucleated B lymphocyte, the presence of which is the pathologic hallmark of Hodgkin’s disease. Hodgkin’s lymphoma can be identified by the presence of malignant cells within the body. These aberrant cells, with their cancerous nature, serve…

  • Raynaud’s phenomenon

    Intermittent interruptions of blood supply to the fingers, toes, and sometimes the ears, marked by severe pallor of these parts and accompanied by numbness, tingling, or severe pain. A temporary constriction of arterioles in the skin causing short episodes of numbness and color changes in the fingers and toes. This condition is usually idiopathic. A…

  • Rales

    Abnormal respiratory sound heard on auscultation of the lungs and produced by the movement of air through secretion-filled or constricted bronchial passages. An abnormal crackling sound made by the lungs during inspiration; indicative of fluid in a bronchus. An abnormal sound that is produced by the lungs by various types of pulmonary diseases. Abnormal chest…

  • Radioisotope

    Radioactive form of an element. Some are commonly used for diagnostic or therapeutic purposes. A radioactive form of an element. An isotope of a chemical element which is radioactive. Radioactive isotope of an element used in medicine for diagnostic and therapeutic purposes. An isotope that is radioactive; radioisotopes are used clinically in diagnostic and therapeutic…

  • Rudraksha

    ‘The “tears of Shiva”; the dried seeds from the fruit of the rudraksha tree. Said to be good for the heart both physically and spiritually, helpful for meditation and for “opening the heart chakra.”  

  • Rishi

    A seer, a Vedic sage. The ancient rishis perceived and/or recorded the Vedic hymns. These enlightened sages shared their knowledge, medicine, philosophy, and spiritual teachings.  

  • Rasayana

    Rejuvenation therapy which brings about renewal, regeneration, and restoration of bodily cells, tissues, and organs, giving longevity to the cells and enhancing immunity and stamina. A substance that tonifies and nourishes the whole system.  

  • Rasa dhatu

    The first of the seven dhatus, rasa (plasma) is nourished from digested food, and after absorption, it circulates in the entire body via specific channels. Its main function is to provide nutrition to each and every cell of the body. The plasma tissue, which nourishes the other tissues in the body and has a direct…

  • Rakta dhatu

    The second of the seven tissues (dhatus), rakta mainly contains red blood cells, which carry life energy (prana) to all bodily tissues. This oxygenates, or provides the life function, for all the tissues. The blood tissue responsible for giving life and colour to the tissues.