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).
Radiopaque
Anything that does not let X-rays or other types of radiation penetrate. Radiopaque objects block radiation. They are opaque to radiation. A metal object, for example, is typically radiopaque. If a child swallows a coin and it goes down…
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Show more- Arthralgia Pain in the joints. There are many possible causes of pain in a joint. The Greek 'algos' means 'pain.
- Refractory anemia Anemia (a shortage of red blood cells) unresponsive to treatment
- Range In medicine and statistics, the difference between the lowest and highest numerical values. For example, if…
- ACE inhibitors ACE inhibitors: A drug that inhibits ACE (angiotensin converting enzyme) which is important to the formation…
- Little lady of Flores The first skeleton, that of a diminuitive female, found on the Indonesian island of Flores belonging to a new…
- American College of Nurse-Midwives See: Nurse-midwife
- XP Xeroderma pigmentosum
- Hypnos The Greek and Roman god of sleep. From his name is derived the term hypnosis. Hypnos was the twin of…
- Systemic mastocytosis A form of mastocytosis characterized by infiltrates of mast cells in the skin, lymph nodes, liver, spleen…
- Macula A macula is a small spot. A macula on the skin is a small flat spot while the macula in the eye is a small…
- ALT (alanine aminotransferase) An enzyme normally present in liver and heart cells that is released into the bloodstream when the liver or…
- Syndactyly, partial A condition in which fingers or toes are partially joined together. Syndactyly can involve the bones or just…