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).
Prion disease
A disease due to a prion, a proteinaceous infectious particle that lacks nucleic acids. Prions are composed largely, if not entirely, of an altered formal (an abnormal isoform) of a normal cellular protein. The known prion diseases of…
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Show more- Concatemer Multiple copies of a DNA sequence arranged end to end in tandem. Concatenate means to link together in a…
- Lacrimal gland A small almond-shaped structure that produces tears. The lacrimal gland is located just above the outer…
- Diabetes insipidus Diabetes insipidus: Excessive urination and extreme thirst as a result of inadequate output of the pituitary…
- Laryngeal nerve, recurrent One of the best known branches of the vagus nerve, a very long nerve that originates in the brainstem. After…
- Schedules, Gesell Developmental A measure of child development devised by the American child psychologist and pediatrician Arnold Gesell…
- Reiter syndrome A chronic form of inflammatory arthritis wherein the following three conditions are combined: (1) arthritis…
- SRY Sex region Y, a region on the Y chromosome that determines the sex of the individual. SRY is necessary and…
- Tension, intraocular The pressure within the eye
- Platelet aggregation The clumping together of platelets in the blood. Platelet aggregation is part of the sequence of events…
- Cysts Cysts: Cysts are abnormal, closed sac-like structures within a tissue that contain a liquid, gaseous, or…
- Lindane An organochlorine pesticide and nerve poison. Also a suspected carcinogen (cancer-causing agent). Although…
- Tonometry Tonometry: A standard eye test that determines the fluid pressure inside the eye. Increased pressure is a…