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).
Autonomic nervous system
Part of the nervous system that was once thought to be functionally independent of the brain. The autonomic nervous system regulates key functions of the body including the activity of the heart muscle (see below), the smooth muscles…
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Show more- Radioisotope A version of a chemical element that has an unstable nucleus and emits radiation during its decay to a stable…
- Transcriptomics The study of the transcriptome, the complete set of RNA transcripts produced by the genome at any one time
- Abductor muscle Any muscle used to pull a body part away from the midline of the body. For example, the abductor muscles of…
- Reiki ('RAY-kee') A Japanese word representing Universal Life Energy. Reiki is based on the belief that when…
- Atrial Pertaining to the atria, the upper chambers of the heart, as in atrial fibrillation and atrial septal defect
- Weaver-Smith syndrome. See: Weaver syndrome
- Prelingual Before the development of speech and language. 'She showed that in prelingually deaf people (that is, those…
- Did not attend (DNA) In the UK, DNA is an abbreviation for 'did not attend.' (In the US, the term used for a patient who missed an…
- Vincent angina This is trench mouth, a progressive painful infection with ulceration, swelling and sloughing off of dead…
- Pimple A small papule or pustule. Pimples are sebaceous glands (oil glands) that are infected with bacteria, become…
- Lobule A little lobe.
- Hospice A program or facility that provides special care for people who are near the end of life and for their…