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).
Epicardium
The inner layer of the pericardium, a conical sac of fibrous tissue that surrounds the heart and the roots of the great blood vessels. The pericardium has outer and inner coats. The outer coat is tough and thickened, loosely cloaks the…
Read the definitionRandom terms
Show more- JIP Juvenile intestinal polyposis. See: Juvenile polyposis
- Carboxyhemoglobinemia The presence of carboxyhemoglobin in the blood. Carboxyhemoglobin, hemoglobin that has carbon monoxide bound…
- FBN1 The fibrillin 1 gene. This gene is mutated in Marfan syndrome, the MASS syndrome, and related disorders of…
- VEGF Vascular endothelial growth factor, a substance made by cells that stimulates the formation of new blood…
- Autoimmune thyroid disease Disease of the thyroid gland due to autoimmunity in which the patient's immune system attacks and damages…
- Cilium A fine hairlike projection from a cell such as those in the respiratory tract. Cilia can help to sweep away…
- Selfish operon A hypothesis according to which the clustering of genes and their subsequent organization into operons is…
- Nerve block See: Neuron.
- Primary tumor A tumor that is at the original site where it first arose. For example, a primary brain tumor is one that…
- Physiologic amenorrhea The cessation of menstruation that it is completely normal and is not caused by anything pathologic. The lack…
- Erotomania The false but persistent belief that one is loved by a person (often a famous or prominent person), or the…
- Hand-foot-and-mouth syndrome Hand-foot-and-mouth syndrome: A clinical pattern consisting of a rash on the hands and feet and in the mouth…