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).
Illness, heat-related
A person with symptoms including headache, nausea, and fatigue after exposure to heat probably has some measure of a heat-related illness. It is important to recognize the difference between the very serious condition known as heat stroke…
Read the definitionRandom terms
Show more- Jerk, hypnic See: Hypnic jerk
- Vein, great saphenous The larger of the two saphenous veins, the principal veins that run up the leg superficially (near the…
- Hemophagocytic lymphohistiocytosis A rare, cancer-like disorder in which both histiocytes and lymphocytes start to proliferate and attack body…
- Idiopathic Of unknown cause. Any disease that is of uncertain or unknown origin may be termed idiopathic. For example…
- Vaginitis, atrophic Thinning of the lining (the endothelium) of the vagina due to decreased production of estrogen. This may…
- Meconium ileus Obstruction of the intestine (ileus) due to overly thick meconium, the dark sticky stuff that is normally…
- Upper respiratory infection An infection of the upper part of the respiratory system which is above the lungs. An upper respiratory…
- Lateral meniscus of the knee The word 'meniscus' refers to a crescent-shaped structure. The lateral meniscus of the knee is a thickened…
- Indicate In medicine, to make a treatment or procedure advisable because of a particular condition or circumstance…
- Jugular The principal vein in the front of either side of the neck. The word comes from the Latin jugulum meaning…
- Inflammatory bowel disease A group of chronic intestinal diseases characterized by inflammation of the bowel -- the large or small…
- Hemidiaphragm, raised See: Elevated hemidiaphragm