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).
Phenylalanine hydroxylase deficiency
The inherited inability to process the amino acid phenylalanine normally, due to deficiency of the enzyme phenylalanine hydroxylase. This deficiency is caused by mutation in the PAH gene (on chromosome 12 in band 12q23.2). Hundreds of…
Read the definitionRandom terms
Show more- Cranial nerve, sixth The sixth cranial nerve is the abducent nerve. It is a small motor nerve that has one task: to supply a…
- Therapy, maintenance See: Maintenance therapy
- Prostaglandin E2 One of the prostaglandins, a group of hormone-like substances that participate in a wide range of body…
- Middle ear There are three sections of the ear. They are the external ear, the middle ear, and the inner ear. The middle…
- Anorexia Anorexia: An eating disorder characterized by markedly reduced appetite or total aversion to food. Anorexia…
- JCI The Journal of Clinical Investigation, a highly regarded biomedical journal
- Toxin, anthrax The toxic substance secreted by the bacterium Bacillus anthracis, the causative agent of the disease anthrax…
- Node, atrioventricular The atrioventricular (AV) node is an electrical relay station between the atria (the upper) and the…
- Nares The nostrils or nasal passages. Nares is the Latin plural of naris, meaning nostril. Nares shares the same…
- Doctor In a medical context, any medical professional with an MD, a PhD, or any other doctoral degree. The term…
- Vaginitis Vaginitis: Inflammation of the vagina. The vagina is the muscular canal extending from the cervix to the…
- Labial Pertaining to the lip, one of the fleshy folds which surround the opening of the mouth or the vagina. Oral…