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.
- 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).
Occipital bone
The bone that forms the rear and the rear bottom of the skull. The occipital bone encloses a large oval hole called the foramen magnum that allows passage of the spinal cord. The occipital bone articulates (joins) with the parietal and…
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Show more- Bicycle helmet A well-known but often neglected device designed to protect the head of a bicyclist. Helmets decrease the…
- Central venous line A catheter (tube) that is passed through a vein to end up in the thoracic (chest) portion of the vena cava…
- Tube, Fallopian The two Fallopian tubes, one on each side, transport the egg from the ovary to the uterus (the womb). The…
- Appendectomy Appendectomy: Removal by surgery of the appendix, the small worm-like appendage of the colon (the large…
- Tylosis with esophageal cancer A genetic disorder characterized by thickening (hyperkeratosis) of the palms and soles, white patches in the…
- Radiation during pregnancy See: Prenatal radiation exposure
- Kostmann disease Children born with this condition lack neutrophils (a type of white blood cell that is important in fighting…
- Michael Stuart Brown See: Brown, Michael Stuart
- T.i.d. (on prescription) Seen on a prescription, t.i.d. means three times a day. It is an abbreviation for 'ter in die' which in Latin…
- Maternal serum alpha-fetoprotein (MSAFP) The presence of AFP, a plasma protein normally produced by the fetus, in the mother's blood. MSAFP serves as…
- Intersex A group of conditions sometimes referred to as disorders of sexual development (DSDs) in which there is a…
- Drug, sulfa One of the sulfonamides, the sulfa-related antibiotics which are used to treat bacterial and some fungal…