MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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.
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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).
Penetrance
The likelihood a given gene will result in disease. For example, if half (50%) of the people with the neurofibromatosis (NF) gene have the disease NF, the penetrance of the NF gene is 0.5.
Read the definitionRandom terms
Show more- Rate, erythrocyte sedimentation A sedimentation rate, or 'sed rate', is a blood test that detects and is used to monitor inflammation…
- Toxic syndrome The ensemble of the signs and symptoms of the disorder resulting from exposure to a toxic agent. There are…
- Bid (on prescription) Seen on a prescription, bid means twice (two times) a day. It is an abbreviation for 'bis in die' which in…
- Mutation, germline Mutation, germline: A heritable change in the DNA that occurred in a germ cell (a cell destined to become an…
- Tacrolimus Tacrolimus: A drug that suppresses the immune system and prevents transplant rejection. The drug acts by…
- Technology, recombinant DNA A series of procedures used to join together (recombine) DNA segments. A recombinant DNA molecule is…
- Leptospirosis Leptospirosis: An infectious disease caused by a particular type of bacteria called a spirochete transmitted…
- Right atrium The right upper chamber of the heart. The right atrium receives deoxygenated blood from the body through the…
- Hives from pressure See Pressure urticaria
- Genetic meltdown A genomic crisis due to an extraordinarily high rate of mutation, a phenomenon known to occur in viruses and…
- Tic A repetitive movement that is difficult, if not impossible, to control. Tics can affect any group of muscles…
- Musset sign See: de Musset sign