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).
Ad lib
Abbreviation for the Latin 'ad libitum' meaning 'at pleasure' and 'at one's pleasure, as much as one desires, to the full extent of one's wishes.' Sometimes seen on a prescription or doctor's order. For example, during an overnight fast…
Read the definitionRandom terms
Show more- Event, adverse See: Adverse event
- Wilkins, Lawson American physician (1894-1963) who founded pediatric endocrinology. At Johns Hopkins Medical School in…
- Protozoa A single-cell organism that can only divide within a host organism. Malaria is caused by a protozoa…
- X-rays during pregnancy See: Prenatal radiation exposure
- Pott's disease An old term for tuberculosis of the spine that caused softening and collapse of the vertebrae, often…
- General paresis Progressive dementia and generalized paralysis due to chronic inflammation of the covering and substance of…
- Phenomenon, Raynaud's A condition resulting in discoloration of fingers and/or toes when a person is exposed to changes in…
- Irradiation, food See: Food irradiation
- Study population The group of individuals in a study. In a clinical trial, the participants make up the study population. The…
- Ergotism Ergotism could be called a 'cereal killer' for its cause, ergot, comes from cereals such as rye and wheat and…
- Extrapyramidal system That part of the nervous system that regulates muscle reflexes
- Polymerase, DNA Enzyme that catalyzes (speeds) the polymerization of DNA. DNA polymerase uses preexisting nucleic acid…