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).
Empyema
The presence of pus in the pleural space which is between the outer surface of the lung and the chest wall. Empyema is often a complication of pneumonia caused by bacteria such as Streptococcus pneumonia, Staphylococcus aureus, or…
Read the definitionRandom terms
Show more- Atrial septum The wall between the two upper chambers (the right and left atrium) of the heart
- Trachea A tube-like portion of the breathing or 'respiratory' tract that connects the 'voice box' (larynx) with the…
- Turner syndrome Turner syndrome: A chromosome disorder in females that is characterized by the absence of all or part of a…
- Partial laryngectomy A surgical procedure on the voice box designed to preserve the voice. The surgeon removes part of the voice…
- HIV test A test for the human immunodeficiency virus, the cause of AIDS. HIV tests are designed to detect antibodies…
- Satellite DNA DNA that contains many tandem (not inverted) repeats of a short basic repeating unit. Satellite DNA is…
- SNCA The gene for alpha-synuclein
- Rhythm method Also known as fertility awareness, natural family planning, and periodic abstinence, this approach to…
- Ketoacidosis A feature of uncontrolled diabetes mellitus characterized by a combination of ketosis and acidosis. Ketosis…
- Diabetic retinopathy A common complication of diabetes affecting the blood vessels in the retina (the thin light-sensitive…
- Lethal Deadly, fatal, capable of causing death, death-dealing. The word 'lethal' comes from the Latin 'letum'…
- Body integrity identity disorder (BIID) A psychological condition in which the individual actively seeks an elective amputation. Individuals…