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).
Down syndrome
Down syndrome: A common chromosome disorder due to an extra chromosome number 21 (trisomy 21). Down syndrome causes mental retardation, a characteristic face, and multiple malformations. Down syndrome is a relatively common birth defect…
Read the definitionRandom terms
Show more- Stasis dermatitis A skin irritation on the lower legs generally related to circulatory problems. Stasis refers to a stoppage or…
- Marsh fever See malaria
- Secondary amenorrhea The abnormal cessation of menstruation. Amenorrhea is conventionally divided into primary and secondary…
- Gingivitis, fusospirochetal This is trench mouth, a progressive painful infection with ulceration, swelling and sloughing off of dead…
- Taeniasis Common minor anomaly, a rudimentary tag of ear tissue, often containing a core cartilage, usually located…
- Drugs during pregnancy, dangerous A teratogen is an agent that can disturb the development of the embryo or fetus. Teratogens halt the…
- Cell The basic structural and functional unit in people and all living things. Each cell is a small container of…
- Pharmaco-epidemiology The study of the use of drugs in society. The process of identifying and responding to safety issues about…
- Ligate To tie or to tie off, as in to ligate an artery. From the Latin 'ligare' meaning 'to bind or tie.' Ligature…
- Primary care The 'medical home' for a patient, ideally providing continuity and integration of health care. All family…
- Wilms tumor An inherited disorder in which too much copper accumulates in the body. Although the accumulation of copper…
- Contraction, uterine The tightening and shortening of the uterine muscles. During labor, contractions accomplish two things: (1)…