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).
Sinus node
The sinus node is one of the major elements in the cardiac conduction system, the system that controls the heart rate. This stunningly designed system generates electrical impulses and conducts them throughout the muscle of the heart…
Read the definitionRandom terms
Show more- Pap test, ThinPrep A modified Pap test technique designed to reduce some of the technical problems inherent in the traditional…
- Outpatient A patient who is not an inpatient (not hospitalized) but instead is cared for elsewhere -- as in a doctor's…
- Oligodendrocyte A type of cell in the central nervous system. The oligodendrocytes surround and insulate the long fibers (the…
- Genomic segment A region of the genome; it encompasses objects described as loci or probes. Genomic segments can range in…
- Myalgia, epidemic Also known as Bornholm disease, this is a temporary illness that is a result of virus infection. The disease…
- Ban zhi lian See: Scutellaria barbata
- Cretinism Congenital hypothyroidism (underactivity of the thyroid gland at birth) resulting in growth retardation…
- Glucose tolerance test See: Impaired glucose tolerance.
- Disease, Graves Generalized diffuse overactivity ('toxicity') of the entire thyroid gland which becomes enlarged into a…
- Vaccination, polio The vaccines available for vaccination against polio are OPV (Oral Polio Vaccine) and IPV (Inactivated Polio…
- Glycogen storage disease One of the 14 recognized diseases that interfere with the storage of carbohydrates as glycogen in the body…
- Naegleria infection Naegleria infection: Infection from an ameba called Naegleria fowleri that is commonly found in the…