Category: M

  • Micturition syncope

    Sudden loss of consciousness during urination; most often observed in men. The abrupt loss of consciousness during urination. It usually occurs in men who get up at night to urinate and is mediated by an increase in vagal tone. A momentary lapse of consciousness that occurs either during or immediately after urination, often experienced when…

  • Microphobia

    Fear of germs.  

  • Microhepatia

    Abnormally small sized liver.  

  • Microcytic anemia

    Anemia where the average size of circulating erythrocytes is smaller than normal. Anemia marked by abnormally small red blood cells.  

  • Micrencephaly

    Abnormally small size of the brain.  

  • Metratonia

    Atony of the uterine wall following childbirth. Uterine atony occurring after childbirth.  

  • Metopic

    Relating to the anterior portion of the cranium or forehead.  

  • Metered dose inhaler

    Medical device used to deliver a specific quantity of aerosolized medication to the airway. A device used for self-administration of aerosolized drugs. An apparatus designed to administer a precise quantity of asthma medication directly into the respiratory system, specifically targeting the lungs.  

  • Metatarsal bones

    The five long bones of the foot. The five bones in the foot which correspond to the metacarpal bones in the hand, lying between the tarsal bones, at the ankle, and the toes. Among the five elongated, cylindrical bones found in the foot, the metatarsal bones constitute the core structure. These bones link the phalanges…

  • Metacarpal

    The five bones that make up the hand. Relating to the bones of the hand (metacarpus).