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).
Topoisomerase
A class of enzymes that alter the supercoiling of double-stranded DNA. (In supercoiling the DNA molecule coils up like a telephone cord, which shortens the molecule.) The topoisomerases act by transiently cutting one or both strands of the…
Read the definitionRandom terms
Show more- Port wine stain A mark on the skin that resembles port wine (porto) in its rich ruby red color. Due to an abnormal…
- Addison disease Addison disease: Long-term underfunction of the outer portion of the adrenal gland. In medical terms, chronic…
- Scaffold 1. In genetics, the chromosome structure consisting entirely of nonhistone proteins remaining after all the…
- Category 4 storm See: Category four hurricane
- Pupil The opening of the iris. The pupil may appear to open (dilate) and close (constrict) but it is really the…
- Acetyl phosphate A molecular ion which plays a role in the synthesis of the four-carbon fatty acid, butyric acid. The formula…
- Gastric stapling A surgical procedure that converts the upper part of the stomach into a very small pouch by stapling portions…
- Pancreatic Having to do with the pancreas, a spongy, tube-shaped organ about 6 inches long. It is located in the back of…
- Pulse, Corrigan A pulse that is full and then suddenly collapses. Named for the Irish physician Dominic John Corrigan…
- Anal itching L ODYvAlign=top bgColor=#cccccc colSpan=2> vAlign=top width='100%' bgColor=#ffffff>Our Anal itching Main…
- Jackknife seizure See: Infantile spasms
- Dipper A person in whom there is the normal nocturnal fall (dip) in blood pressure. The opposite of a dipper is a…