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).
Beta particle
An electron ejected from the nucleus of a decaying atom. Although beta particles can be stopped by a thin sheet of aluminum, they can penetrate the dead skin layer, potentially causing burns. They can pose a serious direct or external…
Read the definitionRandom terms
Show more- Toco- Prefix meaning childbirth. For example, tocolysis is the slowing or halting of labor. Sometimes spelled tok-…
- Postmaturity Overly mature, overly developed, especially as regards a baby. A baby born 2 weeks (14 days) or more after…
- IRB Institutional Review Board
- Bone, endochondral Any bone that develops in and replaces cartilage. The cartilage is partially or entirely destroyed by the…
- Knee jerk The reflex tested by tapping just below the knee causing the lower leg to suddenly jerk forward. What is…
- Alcohol Abuse and Alcoholism, National Institute One of the National Institutes of Health, NIAAA's mission is to 'conduct research focused on improving the…
- Congenital Present at birth. A condition that is congenital is one that is present at birth. There are numerous uses of…
- Salabrasion A technique in which salt or a salt solution is used to abrade the skin, for example to remove the pigment…
- Penis, hypospadias of the Birth defect of the penis involving the urethra (the transport tube leading from the bladder to discharge…
- Belt, seat A belt used to hold an individual in their seat. Motor vehicle accidents are the leading cause of death for…
- Petit mal A form of epilepsy with very brief, unannounced lapses in consciousness. A petit mal seizure involves a brief…
- Calipers A metal or plastic tool similar to a compass used to measure the diameter of an object. The skin fold…