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…
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Show more- Syndrome, sick sinus Symptoms of dizziness, confusion, fainting, and heart failure due to a problem with the sinus node of the…
- Errors of metabolism, inborn Heritable (genetic) disorders of biochemistry. Examples of inborn errors of metabolism include albinism…
- Subject As a noun:1. A branch of learning that forms a course of study. In medical school, one of the subjects…
- Valve, mitral One of the four valves of the heart, the mitral valve is situated between the left atrium and the left…
- Tinea barbae A superficial fungal infection of the skin, affecting the bearded area of the face and neck, with swellings…
- Retrograde amnesia Amnesia in which the lack of memory relates to events that occurred before a traumatic event. Retrograde…
- Traction, orthopedic The use of a system of weights and pulleys to gradually change the position of a bone. It may be used in…
- Thorax The area of the body located between the neck and the abdomen that contains the lungs, the heart and part of…
- Chloropicrin A riot control agent or 'tear gas.' See: Riot control agent poisoning
- Viral infection Infection caused by the presence of a virus in the body. Depending on the virus and the person's state of…
- Surgery, anti-reflux (fundoplication) A surgical technique that strengthens the barrier to acid reflux when the lower esophageal sphincter does not…
- Thelarche The beginnings of breast development at puberty. Thelarche is now a normal event at an earlier age (e.g., age…