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.
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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).
Medicine, transfusion
Blood transfusion and blood conservation are the complementary activities that constitute the clinical arena of transfusion medicine. Blood transfusion is the transfer of blood or blood products from one person (the donor) into another…
Read the definitionRandom terms
Show more- Nail infection, fungal The most common fungus infection of the nails is onychomycosis. Onychomycosis makes the nails look white and…
- Quasidominant Pattern of inheritance that seems due to a dominant trait but is in fact due to the mating of a person who…
- ALS1 See: Amyotrophic lateral sclerosis 1
- Meniscus, lateral knee The word 'meniscus' refers to a crescent-shaped structure. The lateral meniscus of the knee is a thickened…
- Artery, mesenteric One of the arteries that arises from the abdominal portion of the aorta and distributes blood to most of the…
- Treacle A medicinal compound once in wide use as an antidote to poisons. Treacle was a kind of salve. It was reputed…
- Nerve, afferent A nerve that carries impulses toward the central nervous system (CNS). The opposite of an afferent nerve is…
- Pectus excavatum Caved-in or funnel chest. The Latin 'pectus' means 'chest.' The chest is excavated. It looks as if it has…
- Popliteal pterygium syndrome An inherited condition with a web behind the knee. (A pterygium is a winglike triangular membrane). The…
- Rib, floating One of the last two ribs. A rib is said to be 'floating' if it does not attach to the sternum (the breast…
- Melan- (prefix) Prefix meaning dark or black. It comes from the Greek 'melas', black. Examples of terms containing melan-…
- Repetitive stress injury Stress injury: A type of injury from recurrent stress, often associated with the heavy use of computers…