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).
Under the weather
Colloquial expression for sick or ill as, for example, to be under the weather with the flu. The phrase 'under the weather' came from British sailing ships. When a sailor became ill he was confined below deck out of the weather, so it was…
Read the definitionRandom terms
Show more- Examination, postmortem An autopsy. Also called a necropsy. Postmortem examinations have been done for more than 2,000 years but…
- Gram calorie See: Calorie
- Developmental disorder, specific A disorder that selectively affects one area of development, sparing essentially all other areas of…
- Leuko- Prefix meaning white, as in leukocyte (white blood cell). Leuko- comes from the Greek 'leukos' meaning white…
- Electromagnetic field therapy See: Magnet therapy
- RWI Recreational water illness
- Stroke volume The amount of blood pumped by the left ventricle of the heart in one contraction. The stroke volume is not…
- Hysteroscopy A procedure to see inside the uterus (the womb) using a viewing tube that is inserted into the vagina up…
- Vena cava syndrome, superior The symptoms that result from compression of the large vein that carries blood down to the heart. The…
- Somatic cell Any cell in the body other than an egg or sperm
- Periodontal disease A bacterial infection that destroys the attachment fibers and supporting bone that hold the teeth in the…
- Insulinoma A tumor of the beta cells in areas of the pancreas called the islets of Langerhans. Although not usually…