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).
Lens
The transparent structure inside the eye that focuses light rays onto the retina (the nerve layer that lines the back of the eye, senses light and creates impulses that go through the optic nerve to the brain). The lens was named after the…
Read the definitionRandom terms
Show more- Innate immunity Immunity that is naturally present and is not due to prior sensitization to an antigen from, for example, an…
- Insecticide-treated bednet A bednet that has been treated with insecticide to protect against mosquitos and malaria. 'Provision of…
- Manorexia A term that has been used to refer to anorexia nervosa in males. This is not an officially recognized medical…
- Chronic bacterial prostatitis Prostatitis: Longstanding bacterial infection of the prostate gland superimposed on a defect in the prostate…
- New England Journal of Medicine Despite its regional name, The New England Journal of Medicine (NEJM) is far from provincial. It is an…
- I(17q) Symbol for: Isochromosome 17q
- Metatarsals Five cylindrical bones extending from the heel (the tarsus) to the toes. The metatarsals are numbered from…
- Nostrum A worthless remedy. 'Nostrum' is an example of a term that came from medicine, entered the world beyond…
- Meningococcal meningitis Meningitis: Inflammation of the meninges (the membranes covering of the brain and spinal cord) due to…
- Jejunum Part of the small intestine. It is half-way down the small intestine between its duodenum and ileum sections…
- Toluidine A chemical compound implicated, along with aniline, in the causation of bladder cancer. Aniline and…
- Corpora cavernosa Two chambers in the penis which run the length of the organ and are filled with spongy tissue. Blood flows in…