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).
Regulatory sequence
A sequence of bases in DNA that controls gene expression
Read the definitionRandom terms
Show more- Psoriasis, pustular A type of recurring psoriasis characterized by the appearance of pus-filed pimples and sores in clusters. It…
- Watermelon stomach Parallel red sores in the stomach that look like the stripes on a watermelon. Frequently seen with cirrhosis…
- CPP32 See: Caspase 3
- Retrospective Looking backward on the past, on what has already taken place. A retrospective study looks backward in time…
- Hypoglycemia Hypoglycemia: Low blood sugar (glucose). When symptoms of hypoglycemia occur together with a documented blood…
- Acute radiation syndrome An acute illness caused by a dose greater than 50 rads of penetrating radiation to most or all of the body in…
- Stroke volume The amount of blood pumped by the left ventricle of the heart in one contraction. The stroke volume is not…
- Motoneuron The term motoneuron is an elision of motor and neuron. See: Motor neuron
- Acquired mutation A mutation (a genetic change) acquired by a somatic cell after conception. Acquired mutations occur in…
- EDS (excessive daytime sleepiness) A neurological disorder marked by a sudden recurrent uncontrollable compulsion to sleep. Also known as…
- Psoralen photochemotherapy See: PUVA
- Diaphragm (muscle) The muscle that separates the chest (thoracic) cavity from the abdomen. The diaphragm is the main muscle of…