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).
Rod
A type of specialized light-sensitive cell (photoreceptor) in the retina of the eye that provides side vision and the ability to see objects in dim light (night vision). By contrast, the cones are the retinal photoreceptors that provide…
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Show more- Board certified Board certified in medicine means a physician has taken and passed a medical specialty examination. Board…
- Gene, regulatory A gene that regulates the expression of other genes. A regulatory gene is a nosy gene whose prime…
- Polymerase, DNA Enzyme that catalyzes (speeds) the polymerization of DNA. DNA polymerase uses preexisting nucleic acid…
- Polycyclic aromatic hydrocarbon Abbreviated PAH. A hydrocarbon (a molecule made up of hydrogen and carbon) containing two or more closed…
- Cowper's gland A tiny gland in the male, also known as the bulbourethral gland. Named after the English anatomist William…
- Diabetes, adult-onset Type 2 diabetes. See also Diabetes, type 2
- Atonia, REM sleep Sleep : A frightening form of paralysis that occurs when a person suddenly finds himself or herself unable to…
- Acid, folic One of the B vitamins that is a key factor in the synthesis (the making) of nucleic acid (DNA and RNA). A…
- Williams syndrome See: Circle of Willis.
- Morpheus In Greek and Roman mythology, the son of sleep and the god of dreams who lay on an ebony bed in a dim-lit…
- Talc A very soft, soapy-feeling mineral that is a silicate of magnesium, sometimes with small amounts of aluminum…
- Injury, hangman (Hangman's fracture) Injury to one of the two crescent-shaped cartilage pads between the two joints formed by the femur (the thigh…