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).
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- Watson, James American biologist (1928-) who, with Francis Crick and Maurice Wilkins, shared the 1962 Nobel prize in…
- Zellweger syndrome A genetic disorder, also called the cerebrohepatorenal syndrome, characterized by the reduction or absence of…
- Proctitis Inflammation of the rectum. This may be due to a considerable number of causes, among them infectious agents…
- Angina, exudative Angina, exudative: This has nothing whatsoever to do with the usual type of angina (angina pectoris) which is…
- Cancer, islet cell See: Islet cell cancer
- Android pelvis There are significant differences in the anatomy of the pelvis in the female and male. The android or male…
- Stick, heel See: Heel stick
- Accommodation In medicine, the ability of the eye to change its focus from distant to near objects (and vice versa). This…
- Monosomy Missing one chromosome from a pair. For example, if a female has one X chromosome (X monosomy) rather than…
- Open-label A term used to describe the situation when both the researcher and the participant in a research study know…
- Neuroplasticity The brain's ability to reorganize itself by forming new neural connections throughout life. Neuroplasticity…
- Chronic myelogenous leukemia, juvenile See: Juvenile myelomonocytic leukemia