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.
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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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Yolk sac
Not all yolk has to do with birds' eggs. Human embryos have a yolk sac, too. The human yolk sac is a membrane outside the embryo that is connected by a tube (the yolk stalk) though the umbilical opening to the embryo's midgut. The yolk sac…
Read the definitionRandom terms
Show more- MND Motor neuron disease
- Hantavirus A group of viruses that cause hemorrhagic fever and pneumonia. The Hantaviruses include the Hantaan virus…
- Knee joint The knee joint has three parts. The thigh bone (the femur) meets the large shin bone (the tibia) to form the…
- Tear film The liquid layer bathing the cornea and conjunctiva. It creates a perfectly smooth liquid outer layer that…
- Granuloma A granuloma is one of a number of forms of localized nodular inflammation found in tissues. The fact that a…
- Chekhov, Anton (1860-1904) 'Russia's most famous physician' and greatest dramatist. Anton Pavlovich Chekhov graduated from…
- Disease, polygenic See Polygenic disease
- Gene transfer The insertion of unrelated genetic information in the form of DNA into cells. There are different reasons to…
- CLL Chronic lymphocytic leukemia. See: Leukemia, chronic lymphocytic
- Erythema nodosum Erythema nodosum: An inflammatory reaction deep in the skin characterized by the presence of tender red lumps…
- Axon A long fiber of a nerve cell (a neuron) that acts somewhat like a fiber-optic cable carrying outgoing…
- Nocebo A negative placebo effect as, for example, when patients taking medications experience adverse side effects…