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).
Peak expiratory flow
Abbreviated PEF. The maximum airflow during a forced expiration beginning with the lungs fully inflated. The PEF is reduced in proportion to the severity of the airway obstruction, as in asthma and COPD (chronic obstructive pulmonary…
Read the definitionRandom terms
Show more- RMSF Rocky Mountain spotted fever.
- Electrophysiologic retinal testing Testing done to diagnose specific disorders of the retina, including inherited retinal diseases, the effects…
- Fornix In anatomy, a vaultlike or arched structure. For example: > >The fornix in the brain -- a fibrous arching…
- Pharmacy A location where prescription drugs are sold. A pharmacy is, by law, constantly supervised by a licensed…
- HMPS Hereditary mixed polyposis syndrome
- Physiology >Some physiological studies are concerned with processes that go on within cells such as phagocytosis, the…
- Rorschach test A psychological test involving inkblots. The inkblots are used to determine what a person perceives (reads…
- Blood culture A test designed to detect if microorganisms such as bacteria and fungi are present in blood. A sample of…
- Teleological Serving an ultimate purpose in its design. For example, 'What is the true purpose of the nose?' That is a…
- Litmus test 1. A test to determine the acidity and alkalinity of a solution. See: Litmus. 2. Figuratively, any test in…
- Operation Although there are many meanings to the word 'operation', in medicine it refers to a surgical procedure. To…
- Percutaneous endoscopic jejunostomy (PEJ) A surgical procedure for placing a feeding tube into the jejunum (part of the small intestine) without…