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).
Undifferentiated cancer
Cancer: A cancer in which the cells are very immature and 'primitive' and do not look like cells in the tissue from it arose. As a rule, an undifferentiated cancer is more malignant than a cancer of that type which is well differentiated…
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Show more- Ephedra A medicinal herb, known scientifically as Ephedra sinica and Ephedra equisetina, also known as mahuang and…
- Hiatus hernia Tal hernia): An anatomical abnormality in which part of the stomach protrudes up through the diaphragm into…
- Femara Brand name for letrozole, an oral antiestrogen. Femara inhibits the enzyme aromatase in the adrenal glands…
- Moyamoya A pattern of progressive obstructive and occlusive cerebral arteritis (inflammation of the cerebral arteries…
- Eagle syndrome Inflammation of the styloid process, a spike-like projection sticking off the base of the skull. The tissues…
- Makeup, permanent See: Permanent makeup
- KID syndrome Acronym for the Keratitis- Ichthyosis-Deafness syndrome, a genetic disorder. See…
- Cramp, writer's A dystonia that affects the muscles of the hand and sometimes the forearm and only occurs during handwriting…
- Colonoscopy, virtual See: Virtual colonoscopy
- Urethral sphincter >Internal sphincter: Part of the muscular bladder wall acts as the internal urethral sphincter and prevents…
- Oxygen A colorless, odorless and tasteless gas that makes up about 20% of the air we breathe (and at least half the…
- Vitamin D3 A vitamin produced by the body when exposed to ultraviolet light or obtained from dietary sources. Vitamin D3…