MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
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.
- Students of medicine, nursing, physiotherapy and the health professions, dealing with technical terminology.
- Doctors, pharmacists and healthcare workers who need a quick and reliable reference.
Definitions are written in clear, accessible language while keeping the rigor required for professional use. Each term has a dedicated URL, instant autocomplete search, and can be shared on WhatsApp, Facebook, X and via email with one click.
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Disclaimer: the content is for informational and educational purposes only and does not replace medical advice. If you have doubts about your health, always consult a qualified professional. In case of emergency call your local emergency number (911 in the US, 112 in the EU).
Nocardia infection
Also called nocardiosis, infection with bacteria called Nocardia which tend to strike the lungs, brain and skin, particularly in people with an impaired immune system. The majority (about 80%) of cases of nocardiosis involves lung…
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Show more- Bicuspid Having two flaps or cusps. The heart valve that is called the bicuspid valve is located between the left…
- In vitro fertilization In the living organism, as opposed to in vitro (in the laboratory).
- Feeding tube See: Enteral nutrition
- Uranium A metallic element that is used as nuclear fuel and is highly toxic and radioactive. Exposure to radiation…
- Extrapyramidal side effects Physical symptoms, including tremor, slurred speech, akathisia, dystonia, anxiety, distress, paranoia, and…
- Dilatation The process of enlargement or expansion. For example, dilatation of the eye is the process by which the pupil…
- Hyaluronic acid Hyaluronic acid: A viscous slippery substance that lubricates the joints, maintains the shape of the…
- Myelitis, transverse A disease of the spinal cord in which there is demyelination (erosion of the myelin sheath that normally…
- Corneal dystrophy, microcystic A disorder in which the cornea (the normally clear front window of the eye) shows dots (or microcysts)…
- Vitamin D A steroid vitamin which promotes the intestinal absorption and metabolism of calcium and phosphorus. Under…
- Breakbone fever An acute mosquito-borne viral illness of sudden onset that usually follows a benign course with headache…
- CD4 A large glycoprotein molecule found on the surface of T lymphocytes that serves as the receptor for HIV. The…