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).
Knee jerk
The reflex tested by tapping just below the knee causing the lower leg to suddenly jerk forward. What is tapped to elicit this reaction is the patellar tendon, the tendon that runs down from the quadriceps muscle in the front of the thigh…
Read the definitionRandom terms
Show more- Flores man See: Homo floresiensis
- Cervical vertebra, second The second cervical vertebra is called the axis. It is so-named because the uppermost cervical vertebra…
- Map, physical A map of the locations of identifiable landmarks on chromosomes. Physical distance is measured in base pairs…
- Pelvis, android There are significant differences in the anatomy of the pelvis in the female and male. The android or male…
- Avery, MacLeod, and McCarty Authors of a scientific paper entitled 'Studies on the chemical nature of the substance inducing…
- Odynophagia Pain on swallowing food and fluids, a symptom often due to disease of the esophagus. From the Greek roots…
- Rem In radiation, Roentgen equivalent for man, a roentgen (an international unit of X- or gamma-radiation)…
- Veins, ophthalmic The orbital cavity is drained by paired veins called the superior and inferior ophthalmic veins. The superior…
- Entamoeba histolytica The agent of amebic dysentery, a disorder with inflammation of the intestine and ulceration of the colon…
- Test, exercise treadmill A test (sometimes simply called a treadmill test or exercise test) in which a continuous electrocardiogram…
- Knee, jumper's See: Patellar tendonitis
- Vascular headache A group of headaches felt to involve abnormal sensitivity of the blood vessels (arteries) in the brain to…