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).
Os
Two Latin words used in medicine that have different meanings and pronunciations. 1. The mouth: a. The upper opening of the digestive tract. b. Any opening or aperture in the body. The o in os meaning mouth or opening is pronounced as in…
Read the definitionRandom terms
Show more- Restriction map An array of sites in DNA susceptible to cleavage by diverse restriction enzymes
- Infectious mononucleosis Infectious mononucleosis: A specific viral infection (with the Epstein-Barr virus) in which there is an…
- Volume, stroke Stroke: The amount of blood pumped by the left ventricle of the heart in one contraction. The stroke volume…
- QHC Qualified health claim
- Velamentous insertion of umbilical cord An abnormal condition in which the umbilical cord does not insert into the placental mass but, instead…
- Cell, beta (pancreatic) A type of cell in the pancreas (the organ of the digestive system located behind the stomach). Within the…
- Surgery, fetal The surgical treatment of the fetus before birth. Also called prenatal or antenatal surgery. Fetal surgery is…
- Coronary artery brachytherapy Local radiation treatment within an artery to the heart. Coronary artery brachytherapy has been used to…
- Disease, Parry's Toxic multinodular goiter, a condition in which the thyroid gland contains multiple lumps (nodules) that are…
- Fasciolopsis The giant intestinal fluke. See: Fasciolopsis.
- VSD A Ventricular Septal Defect, a hole in the septum (the wall) between the lower chambers of the heart (the…
- Point, McBurney's McBurney's point is the most tender area of the abdomen of patients in the early stage of appendicitis…