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).
Trigger
Something that either sets off a disease in people who are genetically predisposed to developing the disease, or that causes a certain symptom to occur in a person who has a disease. For example, sunlight can trigger rashes in people with…
Read the definitionRandom terms
Show more- Parkinson disease gene A gene involved in the causation of Parkinson disease. There are a number of different autosomal dominant and…
- Underwater weighing A method for determining the lean body mass. This method weighs a person underwater and then calculates the…
- Pacifier An artificial nipple, usually made of plastic, upon which an infant can suck to gain some solace and quiet…
- Lyophilization A process by which material is rapidly frozen and dehydrated under high vacuum
- Felty syndrome A complication of long-standing rheumatoid arthritis characterized by the presence of 3 conditions --…
- Ambulatory Able to ambulate, to walk about, not bed-ridden or hospitalized
- Hydranencephaly A condition in which the cerebral hemispheres of the brain are absent and replaced by sacs filled with…
- Situational syncope The temporary loss of consciousness in a particular kind of situation. The situations that trigger this…
- Absolute neutrophil count The real number of white blood cells (WBCs) that are neutrophils. The absolute neutrophil count is commonly…
- Fibrodysplasia ossificans progressiva (FOP) A rare but dramatic genetic disorder that turns muscles, tendons and ligaments into bone, threatening to…
- Guillotine A machine used during (and after) the French Revolution for beheading people condemned to death, by means of…
- Agranulocytosis A marked decrease in the number of granulocytes. Granulocytes are a type of white blood cell filled with…