Category: M

  • Mean cell hemoglobin

    The hemoglobin content of the average red blood cell, usually expressed in picograms per red cell and calculated by multiplying the number of grams of hemoglobin/100 ml by 10 and dividing by the red cell count.  

  • Microscopic hematuria

    Red blood cells that are not grossly obvious but are found instead on microscopic examination of a urine specimen. They may be found in patients with tumors of the urinary tract (kidneys, ureters, or bladder); glomerular diseases; kidney or ureteral stones; urinary tract infections; trauma; or in patients without obvious or demonstrable pathology.  

  • Molecular heat

    The result of multiplying a substance’s molecular weight by its specific heat.  

  • Moist heat

    Heat that has moisture content. It may be applied as hot bath pack, hot wet pack, hot foot bath, or vapor bath. The patient should be observed for dizziness, headache, or weakness.  

  • Mechanical equivalent of heat

    The value of heat units in terms of work units. One Calorie (kilocalorie) is equal to 4.1855 X 104 joules.  

  • Medical evaluation of healthy persons

    The examination of asymptomatic individuals to screen for and prevent future illnesses.  

  • Mixed headache

    Headache that may have features of some combination of migraine headache, tension headache, and analgesic withdrawal.  

  • Multiple hamartoma

    A congenital malformation that presents a slowly growing mass of abnormal tissue in multiple sites. The tissues are appropriate to the organ in which the hamartomas are located but are not normally organized. They may appear in blood vessels as hemangiomata, and in the lung and kidney. They are not malignant but cause symptoms because…

  • Microptic hallucination

    A hallucination in which things seem smaller than they are.  

  • Moth-eaten hair

    Patchy areas of baldness, with poorly defined borders. This type of alopecia is one of the cutaneous hallmarks of syphilis.