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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Afferent vessel
A vessel that carries blood toward the heart. A vein or venule
Read the definitionRandom terms
Show more- Womyn Woman. A late 20th century feminist creation to avoid the suffix man
- Hepatic ductular hypoplasia, syndromatic Also called Alagille syndrome or arteriohepatic dysplasia, this is a genetic disorder characterized by…
- Prox- Proximal
- Coinsurance A provision by which the insured individual shares in the cost of certain expenses. The same as co-payment
- Agent Orange An herbicide and defoliant containing 2,4-D and 2,4,5-T and trace amounts of dioxin. Agent Orange was used as…
- Fever, scarlet Also called scarlatina, a disease caused by infection with group A streptococcal bacteria that occurs in a…
- Lyon hypothesis See Lyonization
- Drug, ACE-inhibitor A drug that inhibits ACE (angiotensin converting enzyme) which is important to the formation of angiotensin…
- Abrin A phytotoxin (plant poison) found in the seeds of a plant called the rosary pea or jequirity pea. These seeds…
- Xanthopsia A form of chromatopsia, a visual defect in which objects appear as if they have been overpainted with an…
- Quater in die (on prescription) Seen on a prescription, qid (or q.i.d.) means 4 times a day (from the Latin quater in die). The abbreviation…
- Elevated hemidiaphragm Elevation of half of the diaphragm, the muscle that separates the chest cavity from the abdomen and that…