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).
Department of Health and Human Services
The United States government's principal agency for 'protecting the health of all Americans and providing essential human services, especially for those who are least able to help themselves.' Also known as DHHS and HHS. The U.S…
Read the definitionRandom terms
Show more- Intercurrent disease A disease that intervenes during the course of another disease. A patient with AIDS may develop an…
- Johnny A hospital gown. A johnny is a short collarless gown that ties in the back, worn by patients being examined…
- Radioallergosorbent test An allergy test done on a sample of blood. The test is used to check for allergic sensitivity to specific…
- Calculi The plural of calculus. (Calculi is the proper Latin plural. The alternate English plural is calculuses.
- Hypertrophic cardiomyopathy See: Giant hypertrophic gastritis.
- Menstruation Menstruation: The periodic blood that flows as a discharge from the uterus. Also called menorrhea, the time…
- Vitamin D3 A vitamin produced by the body when exposed to ultraviolet light or obtained from dietary sources. Vitamin D3…
- Muscular dystrophy, limb-girdle One of a group of diseases that may begin in childhood or later with slowly progressive weakness and wasting…
- CPEO Chronic progressive external ophthalmoplegia. Slowly progressive paralysis of certain eye muscles. See also…
- Hemangioma, cavernous A type of hemangioma composed of blood-filled 'lakes' and channels. It is typically raised and red or…
- Aorta The largest artery in the body, the aorta arises from the left ventricle of the heart, goes up (ascends) a…
- Macrocephaly An abnormally large head. The opposite of macrocephaly is microcephaly (an abnormally small head)