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).
Trisomy 21 syndrome
A common chromosome disorder, often called Down syndrome, due to an extra chromosome number 21 (trisomy 21). The chromosome abnormality affects both the physical and intellectual development of the individual. Trisome 21 (Down) syndrome is…
Read the definitionRandom terms
Show more- Hematoma, epidural See: Epidural hematoma
- Placebo Also called the placebo response. A remarkable phenomenon in which a placebo -- a fake treatment, an inactive…
- Cell, rod A type of specialized light-sensitive cell (photoreceptor) in the retina of the eye that provides side vision…
- Mania An abnormally elevated mood state characterized by such symptoms as inappropriate elation, increased…
- Cloning The process of making a clone, a genetically identical copy. Cloning can refer to the technique of producing…
- C-peptide A byproduct of insulin production, usually by the pancreas. The level of C-peptide is a gauge of how much…
- Hormone, parathyroid See Hormone, parathormone
- Nitrogen, liquid See: Liquid nitrogen
- Chimera In medicine, a person composed of two genetically distinct types of cells. Human chimeras were first…
- Injury Harm or hurt. The term 'injury' may be applied in medicine to damage inflicted upon oneself as in a hamstring…
- Coumadin, teratogenicity of The anticoagulant ('blood- thinner') Coumadin is a known teratogen, an agent that can disturb the development…
- Test, eye chart This test measures how well you see at various distances. The eye chart itself -- the usual one is called…