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).
Spider bites
Bites from spiders. These are usually irritating, but not poisonous. Localized reddening and swelling are common and pass within a few days. A few spiders are poisonous, in the US notably the black widow and brown recluse (brown fiddler)…
Read the definitionRandom terms
Show more- Cerebellar Pertaining to the cerebellum, the part of the brain in the back of the head between the cerebrum and the…
- Lens, intraocular See: Intraocular lens
- Pigmentation The coloring of the skin, hair, mucous membranes, and retina of the eye. Pigmentation is due to the…
- Scabies, crusted A severe form of scabies caused by delayed treatment of the initial infestation, characterized by mite-filled…
- Sickle cell trait The condition in which a person has one copy of the gene for sickle cell (and is called a sickle…
- Basal cell nevus syndrome The Gorlin syndrome
- Oral-motor Relating to the muscles of the mouth and/or mouth movements
- Aflatoxin A toxin produced by mold that can damage the liver and may lead to liver cancer. Aflatoxins cause cancer in…
- Qualified health claim A claim authorized by the US Food and Drug Administration (FDA) that must be supported by credible scientific…
- Axon A long fiber of a nerve cell (a neuron) that acts somewhat like a fiber-optic cable carrying outgoing…
- Oligoarthritis Inflammation of four or fewer joints
- Triptan A class of drugs introduced in the 1990s for the treatment of migraine that act as agonists for…