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).
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- Kiddiecam See: Kiddie cam
- Syndrome, Munchhausen Syndrome, Munchhausen: Recurrent feigning of catastrophic illnesses. Munchhausen syndrome is a psychological…
- Isolate A group in which mating is always between members of the group. For example, the Amish.
- Hippocampus An area buried deep in the forebrain that helps regulate emotion and memory. Functionally, the hippocampus is…
- PARK11 Familial Parkinson disease type 11
- Breast, amastia Breast, amastia: A rare condition wherein the normal growth of the breast or nipple never takes place. They…
- Cancer, brain Cancer of the central information processing center of the body. Tumors in the brain can be malignant or…
- Ear, internal There are three sections of the ear. They are the external ear, the middle ear, and the internal ear. The…
- Mucositis Inflammation of the mucous membranes lining the digestive tract from the mouth on down to the anus. Mucositis…
- LEOPARD syndrome A genetic syndrome transmitted in an autosomal dominant manner that is named for its characteristic features…
- Constitutional thrombopathy See: Von Willebrand disease
- Anal atresia Congenital absence of an opening at the bottom end of the intestinal tract. Also called imperforate anus…