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).
Systole
The time period when the heart is contracting. The period specifically during which the left ventricle of the heart contracts. The final letter in 'systole' is pronounced as a long 'e' as in 'lee.' The adjective for systole is systolic…
Read the definitionRandom terms
Show more- Lingual gyrus An area in the occipital lobe, the visual processing center in the brain. The lingual gyrus extends to the…
- Cancer, esophageal See: Esophageal cancer
- DNA sequence, draft Sequence of a DNA with less accuracy than a finished sequence. In a draft sequence, some segments are missing…
- AVM An AVM (arteriovenous malformation) is a congenital disorder (one present at birth) of blood vessels in the…
- Drug-resistant tuberculosis See: Tuberculosis, drug-resistant
- Antiviral An agent that kills a virus or that suppresses its ability to replicate and, hence, inhibits its capability…
- Brachial palsy See: Brachial plexus palsy
- Guillain-Barre syndrome Guillain-Barre syndrome: A disorder characterized by progressive symmetrical paralysis and loss of reflexes…
- Dactyledema Swelling of the fingers or toes
- Leucine An amino acid, one of the 20 building blocks of protein. A dietary essential amino acid, leucine is needed…
- Sickness, acute mountain (AMS) Acute mountain sickness (AMS) is the illness that results from being at high altitude. AMS is common at very…
- DNA In the UK, DNA is an abbreviation for "did not attend." (In the US, the term used for a patient who missed an…