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).
Valve, tricuspid
One of the four heart valves, the tricuspid valve is the first one that blood encounters as it enters the heart. The tricuspid valve is situated between the right atrium and right ventricle and allows blood to flow only from the atrium…
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Show more- Anencephaly A neural tube defect (NTD) that occurs when the cephalic (head) end of the neural tube fails to close…
- Placental chorioangioma A benign vascular (blood vessel) tumor of the placenta (afterbirth). Large chorioangiomas cause complications…
- Cholecystogram, oral See: Oral cholecystogram
- Cell, antigen-presenting A cell that can 'present' antigen in a form that T cells can recognize it. The cells that can 'present'…
- Peripheral artery disease A form of peripheral vascular disease in which there is partial or total blockage of an artery, usually one…
- Tick bite A bite from a bloodsucking, parasitic insect that punctures the skin with a sharp beak. The tic burrows into…
- DNA replication A wondrous complex process whereby the ('parent') strands of DNA in the double helix are separated and each…
- Calefacient 1. (noun) Anything that warms. 2. (noun) A substance that produces a feeling of warmth when it is applied to…
- Physiologic Something that is normal, neither due to anything pathologic nor significant in terms of causing illness
- Miasmic Pertaining to a miasma, a poisonous vapor or mist that was once widely believed to be made up of particles…
- HIV test A test for the human immunodeficiency virus, the cause of AIDS. HIV tests are designed to detect antibodies…
- Syndrome, Zellweger A genetic disorder, also called the cerebrohepatorenal syndrome, characterized by the reduction or absence of…