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Medical Dictionary Terms Beginning with M
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M proteins
M proteins: Antibodies or parts of antibodies found in unusually large amounts in the blood or urine of multiple myeloma patients.more detail info...
M.P.H.
M.P.H.: Master of Public Health (master’s degree in this area of medicine).more detail info...
MacewenÆs operation
MacewenÆs operation: A surgical operation for inguinal hernia designed by Sir William Macewen (1848-1924), a surgeon in Glascow, Scotland who also described MacewenÆs sign for the detection of hydrocephalus and brain abscess.more detail info...
MacewenÆs sign
MacewenÆs sign: A sign to detect hydrocephalus and brain abscess. Percussion (tapping) on the skull at a particular spot (near the junction of the frontal, temporal and parietal bones) yields an unusually resonant sound in the presence ofhydrocemore detail info...
Machine, heart-lung
Machine, heart-lung: A machine that does the work both of the heart (pump blood) and the lungs (oxygenate the blood). Used, for example, in open heart surgery. Blood returning to the heart is diverted through the machine before returning it to thmore detail info...
Macro- (prefix)
Macro- (prefix): Prefix from the Greek "makros" meaning large or long. Examples of terms involving macro- include macrobiotic, macrocephaly, macrocytic, macroglossia, macrophage, macroscopic, and macrosomia. The opposite of macro- is micro-.more detail info...
Macroangiopathy
Macroangiopathy: Angiopathy means disease of the blood vessels (arteries, veins, and capillaries). There are two types of angiopathy: microangiopathy and macroangiopathy. With microangiopathy, the walls of very small blood vessels (capillaries)more detail info...
Macrobiota
Macrobiota: The living organisms (or flora and fauna) of a region that are large enough to be seen with the naked eye. From the Greek macro-, large + bios, life.more detail info...
Macrobiotic
Macrobiotic: Macrobiotic refers to the macrobiota, a region’s living organisms (or flora and fauna) large enough to be seen with the naked eye. However, macro- comes from the Greek &makros& meaning not only &large& but also &qumore detail info...
Macrocephaly
Macrocephaly: An abnormally large head.more detail info...
Macrocytic
Macrocytic: Enlarged red blood cells (RBCs). Folic acid deficiency is one cause of macrocytic anemia.more detail info...
Macroglossia
Macroglossia: Enlarged tongue.more detail info...
Macrophage
Macrophage: Type of white blood that takes in (ingests) foreign material. Macrophages are key players in the immune response to foreign invaders of the body, such as infectious microorganisms.more detail info...
Macrophagic myofasciitis
Macrophagic myofasciitis: A muscle disease first identified in 1993, macrophagic myofasciitis is named for the findings seen in tissue from muscle biopsies, namely an abnormal infiltrate surrounding muscle tissue of specialized immune cells callemore detail info...
Macroscopic
Macroscopic: Large enough to be seen with naked eye. As opposed to microscopic. A big tumor may well be macroscopic while a tiny tumor is microcopic (cannot be seen without the aid of microscope).more detail info...
Macrosomia
Macrosomia: Overly large body. A child with macrosomia has significant overgrowth.more detail info...
Macula
Macula: A small spot. A macula on the skin is a small flat spot while the macula in the eye is a small spot where vision is keenest in the retina.more detail info...
Magnesia
Magnesia: Named after a town in presentday Turkey where an ore containing magnesium carbonate was mined. Milk of Magnesia, the laxative, is magnesium hydroxide.more detail info...
Magnesium
Magnesium: A mineral involved in many processes in the body including nerve signaling, the building of healthy bones, and normal muscle contraction. Magnesium is contained in all unprocessed foods. High concentrations of magnesium are found in nuts, unmore detail info...
Magnesium deficiency
Magnesium deficiency: Can occur due to inadequate intake or impaired intestinal absorption of magnesium. Low magnesium (hypomagnesemia) is often associated with low calcium (hypocalcemia) and low potassium (hypokalemia). Deficiency of magnesium causesmore detail info...
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