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).
Optic nerve
The optic nerve connects the eye to the brain. The optic nerve carries the impulses formed by the retina, the nerve layer that lines the back of the eye and senses light and creates impulses. These impulses are dispatched through the optic…
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Show more- Cancer registry A register designed to collect information about the occurrence (incidence) of cancer, the types of cancers…
- Acid rain Rain resulting from the combination of fossil fuel emissions and water in the atmosphere. The environmental…
- RPR test Rapid plasma reagin, a blood test for syphilis that looks for an antibody that is present in the bloodstream…
- Disease, subclinical An illness that stays below the surface of clinical detection. A subclinical disease has no recognizable…
- Let down reflex An involuntary reflex during breastfeeding which causes the milk to flow freely
- Cortisone An adrenocorticoid hormone, a naturally occurring hormone made by and secreted by the adrenal cortex, the…
- Ring vaccination The vaccination of all susceptible individuals in a prescribed area around an outbreak of an infectious…
- Dandy fever An acute mosquito- borne viral illness of sudden onset that usually follows a benign course with headache…
- Myelination The formation of the myelin sheath around a nerve fiber. Also known as myelinization
- Abused inhalant >Solvents > >Industrial or household solvents or solvent-containing products, including paint thinners or…
- Aluminum A naturally occurring element that makes up about 8% of the surface of the earth and is always found combined…
- Gland, thyroid See: Thyroid gland