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).
Foreskin
The fold of skin which covers the head (the glans) of the penis. Also called the prepuce. Only about 1 in every 20 boys is born with a retractable foreskin. This reflects the fact that the histologic (tissue) development of the foreskin is…
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Show more- Atlas The atlas is the first cervical (neck) vertebra (symbol: C1). It supports the head. The atlas bone is named…
- Movement, fetal Movement of the fetus in the womb. The first fetal movements felt by the mother during pregnancy (quickening)…
- Myopia Myopia: Nearsightedness, the ability to see close objects more clearly than distant objects. Myopia can be…
- Acute thrombocytopenic purpura The sudden onset of low blood platelet levels with bleeding into the skin and elsewhere. Acute…
- Node, sinus The sinus node is one of the major elements in the cardiac conduction system, the system that controls the…
- Acute phase protein See: Acute-phase protein
- Rickettsiosis, North Asian tick-borne One of the tick-borne rickettsial diseases of the eastern hemisphere, similar to Rocky Mountain spotted…
- Dementia Dementia: Significant loss of intellectual abilities such as memory capacity, severe enough to interfere with…
- Cranial nerve XI The eleventh cranial nerve is the accessory nerve. The twelve cranial nerves, the accessory nerve included…
- Yd. Abbreviation for a yard as a measure of length. A yard equals 3 feet or 36 inches. The metric equivalents for…
- Centimeter (cm) A unit of measure in the metric system which is 1/100'th of a meter. There are 2.54 centimeters (cms) in one…
- Hereditary prostate cancer Prostate cancer: A genetic form of prostate cancer. The risk of prostate cancer is clearly genetic. Men with…