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).
Nerve, second cranial
Also known as the optic nerve. This nerve connects the eye to the brain and carries the impulses formed by the back layer of the eye (retina) to the brain, which interprets them as images. The cranial nerves emerge from or enter the skull…
Read the definitionRandom terms
Show more- Retina, detached A retina that separates from its connection at the back of the eye. The process of retinal detachment is…
- Drug Enforcement Administration (DEA) Every prescription written in the United States bears a DEA number, that of the prescribing doctor, the DEA…
- Singultus A rarely used medical word for an ordinary hiccup. A hiccough is an extraordinary type of breathing movement…
- Category 5 storm See: Category five hurricane
- MRC 1. In the US, the Medical Reserve Corps. 2. In the UK and some Commonwealth countries, the Medical Research…
- Dysmotility syndrome A vague, descriptive term used to describe diseases of the muscles of the gastrointestinal tract (esophagus…
- B variant GM2-gangliosidosis See: Tay-Sachs disease
- Flavoproteins Flavoproteins are yellow proteins that serve as enzymes critical to the ability of cells in the body to…
- Malaise A vague feeling of discomfort, one that cannot be pinned down but is often sensed as 'just not right.'…
- Meningitis, neoplastic A condition due to cancer that has spread from the original (primary) tumor to the meninges, the tissue…
- Polygenic Pertaining to two or more genes. As opposed to monogenic. Eye color is polygenic. It is by determined by a…
- Protein kinase A regulatory subunit 1-alpha See: PRKAR1A