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).
Carcinoma, Merkel cell
Carcinoma, Merkel cell: An infrequent but highly malignant type of skin cancer. Characteristically starts in a sun-exposed area (of the head, neck, arms or legs) in whites 60-80 years of age as a firm, painless, shiny lump that can be red…
Read the definitionRandom terms
Show more- Metatarsophalangeal joint sprain An injury to the big toe due to forced hyperextension (bending back) of the toe. The damage is to the capsule…
- Infant mortality rate The number of children dying under a year of age divided by the number of live births that year. The infant…
- Restriction enzyme An enzyme from bacteria that can recognize specific base sequences in DNA and cut the DNA at that site (the…
- Therapeutic abortion An abortion that is brought about intentionally. Also called an artificial or induced abortion. As opposed to…
- Pregnancy, mask of Pigmentation of the cheeks of the face (malar area) that occurs in about half of women during pregnancy. The…
- Humidifier fever Fever: A form of sick building syndrome that usually develops on Monday or the first workday of the week. The…
- Stanley B. Prusiner See: Prusiner, Stanley B.
- Rasmussen syndrome A brain disorder caused by inflammation of brain cells in one hemisphere. Its cause is unknown. Rasmussen…
- L1-L5 (lumbar vertebrae) The symbols L1 through L5 represent the five lumbar vertebrae. The lumbar vertebrae are situated between the…
- Alpha-galactosidase A deficiency See: Fabry disease
- Fundus, retinal The interior lining of the eyeball, including the retina (the light-sensitive screen), optic disc (the head…
- Pustulosis A highly inflammatory skin condition resulting in large fluid-filled blister-like areas (pustules)…