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Lupus A malignant affection of the skin, either tuber- 

 culous or ulcerative. 



Lymph. The fluid portion of the blood, without the cor- 

 puscles ; the fluid of the lymphatic vessels ; also, the 

 fluid exuded during inflammation, 



M 

 Macula. A spot or stain. 

 Malaria. Bad or poisonous air. 

 Mania. Derangement, either intellectual or emotional, or 



both. 

 Marasmus. Wasting away. 



Matrix. A formative or receptive structure or cavity. 

 Melanosis. Morbid deposit of, or conversion of tissue into, 



black pigment. 

 Meningitis. Inflammation of the membranes of the brain. 

 Menorrhagia. Excessive flow of the menses. 

 Metamorphosis. Transformation. 

 Metastasis. The transfer of a disease or symptom from 



one part to another. 

 Meteorism. Distention of the alimentary canal with gas. 

 Miasm. Marsh poison; the local cause of endemic country 



fevers. 

 Microphyte. A microscopic vegetation. 

 Microzoon. a microscopic animalculae. 

 Miliary. Resembling millet seed. 

 Modus operandi. The manner of action or operation. 

 Molecule. The minutest particle into which matter can 



be divided. 

 Molluscum. An uncommon tubercular disease of the skin. 

 Multiform. Having many shapes. 

 Myalgia. Pain (or soreness, tenderness) in one or more 



muscles. 

 Myelitis. Inflammation of the spinal cord. 

 Myeloid. Resembling the spinal marrow. 

 Myocarditis. Inflammation of the muscular tissue of the 



heart. 

 Myopia. Near-sightedness. 



