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).
Trait
In genetics, a trait refers to any genetically determined characteristic. In technical terms, a genetic trait is amenable to segregation analysis rather than quantitative analysis. A dominant lethal trait is a trait that is expressed if…
Read the definitionRandom terms
Show more- Zygomatic arch The part of the temporal bone of the skull that forms the prominence of the cheek. The zygomatic arch is also…
- Cardiopulmonary bypass Bypass of the heart and lungs as, for example, in open heart surgery. Blood returning to the heart is…
- Chronic phase Refers to the early stages of chronic myelogenous leukemia. The number of immature, abnormal white blood…
- Tonsillolith A tiny stone (calculus) in the tonsils. Also referred to as a tonsillith. These stones, called tonsilloliths…
- Thromboxane A substance made by platelets that causes blood clotting and constriction of blood vessels. There are two…
- Crossover study A type of clinical trial in which the study subjects receive each treatment in a random order. With this type…
- Mitochondrial cytopathy, Kearns-Sayre type See: Kearns-Sayre syndrome
- Miticide An agent, usually a chemical, that kills mites. This class of pesticides is large and includes antibiotic…
- Hepatoma Cancer originating in the liver, in liver cells. More often called hepatocarcinoma or hepatocellular…
- Equol A substance produced in the intestine as a metabolite of soybeans and soy foods. Equol is a non-steroidal…
- Syndrome, Perrault See: Perrault syndrome
- Meniscus, medial knee The word 'meniscus' refers to a crescent-shaped structure. The medial meniscus of the knee is a thickened…