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medical dictionary online

Many terms frequently used in science and medicine are derived from latin words. By combining the root words with, prefixes and suffixes many of the meanings of the terms can be deciphered.

Use the following resources to better understand medical terms:

Medical Roots or Stems
Prefixes commonly used in medical terms
Suffixes commonly used in medical terms

Complete Glossary of Medical Root Words

a b c d e f g h i j k l m n o p q r s t u v w x y z

malabsorption syndromes conditions that happen when the small instestine cannot absorb foods
malignant tumor mass of cancer or "harmful" cells that may invade surrounding tissue
malocclusion means "bad bite" includes crowded or crooked teeth or misaligned jaw
mammogram x-ray of the breast
manometry tests that measure muscel pressure and movements in GI tract
mastitus infection of the milk ducts in the breast
mastoid back portion of the temporal bone (in the skull)
median nerve large nerve, comprising segments fromt he cervical spine that is involved in neural function of the upper limbs

cells in the skin that produce and contain the pigment called melanin

meniscus part of the cartilage in the knees and other joints
miosis constriction of the pupil
mitral valve valve that controls blood flow between the left atrium and ventricle
monoclonal antibodies substances that can locate and bind to cancer cells regardless of their location in the body
motility movement of food through digestive tract
murmur blowing or rasping sound heard while listening to the heart may or may not indicate circulation problems
mydriasis dilation of the pupil
myocardial infarction heart attack (caused by decrease in supply of oxygen to the heart muscle)
myocardial ischemia insufficient blook flow to part of the heart
myocardium muscle wall of the heart
myomectomy surgery to remove fibroids from uterus
myopia nearsightedness




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