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- Craniosynostosis Premature fusion of the cranial sutures (the fibrous joints between the bones of the skull) in an infant…
- Lateral collateral ligament (LCL) of the knee The knee joint is surrounded by a joint capsule with ligaments strapping the inside and outside of the joint…
- Tarantella A remarkable example of early music therapy that originated in the region of Taranto, a city in southeastern…
- Monochromatism 1) Total inability to perceive color. A person with true monochromatism perceives only black, white, and…
- Lice, head See: Head lice
- Therapy, electroshock See Electroconvulsive therapy
- Amnestic aphasia See Anomia
- Autoimmune lymphoproliferative syndrome (ALPS) A disease caused by failure of lymphocytes to die once they have finished doing their job. As a result…
- Cesarian section, lower segment (LSCS) A Cesarian section in which the surgical incision (cut) is made in the lower segment of the uterus
- Gray's Anatomy A book entitled 'Anatomy Descriptive and Surgical' by Henry Gray appeared in 1858. Little could Dr. Gray have…
- Implicit memory Memory characterized by a lack of conscious awareness in the act of recollection. By contrast, explicit…
- PNS (peripheral nervous system) That portion of the nervous system that is outside the brain and spinal cord. The peripheral nervous system…