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).
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…
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Show more- Gene silencing A mechanism by which cells shut down large sections of chromosomal DNA. Gene silencing is done by…
- Nitrogen Element number 7, a colorless, odorless, tasteless gas that is biologically important. Nitrogen is a…
- Code, emergency While there is no formal definition for a 'Code,' doctors often use the term as slang to refer to a patient…
- Sick sinus syndrome Symptoms of dizziness, confusion, fainting, and heart failure due to a problem with the sinus node of the…
- Beard The hair that normally grows on the male face after puberty. Testosterone, the most potent of the naturally…
- Kveim test A skin test for detecting sarcoidosis, a disease of unknown origin that causes inflammation of body tissues…
- XRT Medical abbreviation for radiotherapy
- Antipsoriatic Directed against psoriasis. Sunlight is antipsoriatic, as are a number of drugs
- Genetic meltdown A genomic crisis due to an extraordinarily high rate of mutation, a phenomenon known to occur in viruses and…
- Asian influenza See: Asian flu
- Isometropia The condition in which both eyes have equal refractive power. If, for example, one eye is myopic…
- Rosary pea See: Abrin