MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
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).
Atria
The plural of atrium. The atria are the two smaller chambers of the heart. Each atrium consists of an open space with recessed walls. The right atrium receives deoxygenated blood from the body through the vena cava and pumps it into the…
Read the definitionRandom terms
Show more- Premature baby A baby born before 37 weeks of gestation have passed. Historically, the definition of prematurity was 2500…
- Positive-strand RNA virus Also known as a sense-strand RNA virus, a virus whose genetic information consists of a single strand of RNA…
- Inversion, chromosome A chromosome segment is clipped out, turned upside down and reinserted back into the chromosome. A chromosome…
- Diathermy The use of heat to destroy abnormal cells. Also called cauterization or electrodiathermy.
- Courier In the drug trade, someone who internally conceals and transports an illicit drug. Also called a body packer…
- Genome, mitochondrial All of the genetic information contained in the chromosome of the mitochondrion, a structure located in the…
- Research, clinical A study of a treatment, procedure, or medication done in a medical setting. See also clinical research trials.
- Diabetes Diabetes: Refers to diabetes mellitus or, less often, to diabetes insipidus. Diabetes mellitus and diabetes…
- Feverfew An herb that has been most commonly used for migraine headaches. Feverfew can cause allergic reactions…
- Named reporting In public health, named reporting is the reporting of infected persons by name to public health departments…
- Histiocytosis, lipid A form of histiocytosis that affects lipid (fat) storage. Also known as Niemann- Pick disease…
- Extracolonic Outside the colon. An hereditary colon cancer syndrome may also predispose to extracolonic malignancies