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).
Steroid
A general class of chemical substances that are structurally related to one another and share the same chemical skeleton (a tetracyclic cyclopenta[a]phenanthrene skeleton). Many hormones, body constituents, and drugs are steroids. Thus…
Read the definitionRandom terms
Show more- AFO (ankle-foot orthosis) Ankle-foot orthosis
- Fourth ventricle >Lateral ventricles: The lateral ventricles are in the cerebral hemispheres, one in each hemisphere. Each…
- Percutaneous transluminal coronary angioplasty Angioplasty: PTCA. The use of a balloon-tipped catheter to enlarge a narrowed artery
- Anaplastology The art and science of restoring a malformed or absent part of the human body through artificial means. An…
- Sex chromosome The X chromosome or the Y chromosome, in humans. The sex chromosomes determine the sex of an individual. As a…
- Receptor 1. In cell biology, a structure on the surface of a cell (or inside a cell) that selectively receives and…
- Pernicious anemia Pernicious anemia: A blood disorder caused by inadequate vitamin B12 in the blood. Patients who have this…
- Code black While there is no formal definition for a 'Code,' doctors often use the term as slang to refer to a patient…
- Sporadic >An endemic is present in a community at all times but in low frequency. An endemic is continuous, as in the…
- Pinocytosis A cellular process that permits the active transport of fluid from outside the cell through the membrane…
- JIP Juvenile intestinal polyposis. See: Juvenile polyposis
- Golfer's cramp A dystonia that affects the muscles of the hand and sometimes the forearm and only occurs when playing golf…