MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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).
Proto-oncogene
A normal gene which, when altered by mutation, becomes an oncogene that can contribute to cancer. Proto-oncogenes may have many different functions in the cell. Some proto-oncogenes provide signals that lead to cell division. Other…
Read the definitionRandom terms
Show more- Pediatric end stage liver disease See: PELD
- Hypnosis A part of healing from ancient times. The induction of trance states and the use of therapeutic suggestion…
- Inotropic Affecting the force of muscle contraction. An inotropic heart drug is one that affects the force with which…
- Due date The estimated calendar date when a baby will be born, the date the baby is due to be born. It is also called…
- Fear of heat Thermophobia. An abnormally excessive and persistent fear of heat, including hot weather and hot objects…
- Transverse A fracture in which the break is across the bone, at a right angle to the long axis of the bone.
- Restriction enzyme An enzyme from bacteria that can recognize specific base sequences in DNA and cut the DNA at that site (the…
- Supernumerary placenta A succenturiate or accessory placenta
- HELLP syndrome A syndrome featuring a combination of 'H' for hemolysis (the breakdown of red blood cells), 'EL' for elevated…
- Hemochromatosis Hemochromatosis (iron overload) is an inherited disorder in how the body absorbs and stores iron. The excess…
- Nurse, licensed vocational A nurse who has completed a one- or two-year training program in health care and earned a state license. LVNs…
- Cyst, pilonidal A special kind of abscess that occurs in the cleft between the buttocks. Forms frequently in adolescence…