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).
Reactive oxygen species
Species such as superoxide, hydrogen peroxide, and hydroxyl radical. At low levels, these species may function in cell signalling processes. At higher levels, these species may damage cellular macromolecules (such as DNA and RNA) and…
Read the definitionRandom terms
Show more- Syndrome, cerebrohepatorenal Syndrome, cerebrohepatorenal: A genetic disorder, which is also called the Zellweger syndrome, characterized…
- Prox- Proximal
- Candidiasis, oral Yeast infection of the mouth and throat caused by the fungus Candida albicans; also known as thrush. Yeast…
- Lymphoid Referring to lymphocytes, a type of white blood cell. Also refers to tissue in which lymphocytes develop.
- Fiber FISH A cytogenetic (chromosome) laboratory technique in which FISH (fluorescence in situ hybridization) is done on…
- Node, sinoatrial The sinoatrial is one of the major elements in the cardiac conduction system, the system that controls the…
- Allele An alternative form of a gene. One of the different forms of a gene that can exist at a single locus (spot on…
- Succenturiate placenta An extra placenta separate from the main placenta. In anatomy 'succenturiate' means substituting for or…
- Water pore See: Aquaporin
- Aspiration, fine needle See Fine needle aspiration
- Vitamin B -- pantothenic acid This is one of the less well known B vitamins, perhaps because it is widely distributed in nature…
- DXM Dextromethorphan, a cough suppressant, sometimes misused as a recreational drug