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).
Reflux, esophageal
A condition wherein stomach contents regurgitate or back up (reflux) into the esophagus (a long cylindrical tube that transports food from the mouth to the stomach). The food in the stomach is partially digested by stomach acid and…
Read the definitionRandom terms
Show more- Sexual masochism Sexual masochism is a disorder in which individuals use sexual fantasies, urges or behaviors involving the…
- Stepmother The wife of a man who had a child by another women. See: Novercal
- Fear of having a malformed child An abnormal and persistent fear of bearing a malformed child is termed teratophobia. A phobia is an…
- Axillary dissection Surgery in which the axilla (the armpit) is opened -- to 'dissect' means to 'cut apart' -- in order to…
- Amnesia Lack of memory. Amnesia after trauma can be antegrade or retrograde, depending upon whether the lack of…
- Polygenic disease A genetic disease caused by the combined actions of two or more genes. Examples of polygenic diseases include…
- Os calcis See: Calcaneus
- SCID Severe combined immunodeficiency disease
- Megrim Migraine. Usually periodic attacks of headaches on one or both sides of the head. Megrim (migraine) may be…
- Sleep, REM Sleep, REM: REM sleep is the portion of sleep when there are rapid eye movements (REMs). Dreams occur during…
- Evolutionarily conserved gene A gene that has remained essentially unchanged throughout evolution. Conservation of a gene indicates that it…
- Psychology, clinical A professional specialty concerned with diagnosing and treating diseases of the brain, emotional disturbance…