MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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The most complete online medical dictionary: 16,436 terms covering anatomy, physiology, pathologies, diagnostic exams, pharmacology and every clinical specialty.
Designed for 3 kinds of users:
- Patients and family who want to understand a diagnosis, a medical report or instructions from a doctor.
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EM (electron microscope)
A microscope in which an electron beam replaces light to form the image. EM stands for electron microscope (the device) and for electron microscopy (the technique and field). EM has its pluses (greater magnification and resolution than…
Read the definitionRandom terms
Show more- Ophthalmic veins The orbital cavity is drained by paired veins called the superior and inferior ophthalmic veins. The superior…
- Roth's spot A hemorrhage in the retina with a white center. Originally associated with bacterial endocarditis, Roth's…
- CT scan CT scan: Computerized tomography scan. Pictures of structures within the body created by a computer that…
- Vitamin B12-responsive methylmalonicaciduria An inherited metabolic (biochemical) disease that, unless effectively treated, causes young children to…
- Hairball A wad of swallowed hair. Hairballs can sometimes be found to cause blockage of the digestive system…
- Beta error The statistical error (said to be 'of the second kind' or type II) made in testing when it is concluded that…
- Melanoma, choroidal Malignant melanoma that arises in the eye. See ocular melanoma
- Embolism, crossed See Embolism, paradoxical
- Germ cell The eggs and sperm are the germ cells: the reproductive cells. Each mature germ cell is haploid in that it…
- Bioactive Having an effect upon a living organism, tissue, or cell. Biologically active. Antibiotic, enzymes, and…
- Activated charcoal Charcoal that has been heated to increase its absorptive capacity. Activated charcoal is sold as an…
- Abduction In medicine, the movement of a limb away from the midline of the body. Abduction of both legs spreads the…