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).
Megabase
Unit of length for DNA fragments that is equal to 1 million nucleotides. A megabase (Mb) is roughly equal to 1 centiMorgan (cM)
Read the definitionRandom terms
Show more- Scan, radionuclide See: Radionuclide scan
- ECochG Electrocochleography
- Chromosome map A chromosome (one of the microscopically visible carriers of the genetic material DNA) with its centromere…
- Common hepatic duct The duct formed by the junction of the right hepatic duct (which drains bile from the right half of the…
- Chickenpox rash Chickenpox rash: Chickenpox is characterized by a rash, often the first sign of the disease. The rash of…
- Depression, dysthymia A type of depression involving long-term, chronic symptoms that are not disabling, but keep a person from…
- Rett syndrome An X-linked dominant neurological disorder that affects girls only and is one of the most common causes of…
- Eczema, contact A localized reaction that includes redness, itching, and burning where the skin has come into contact with an…
- Nerve growth factor Abbreviated NGF. A naturally occurring molecule in the body which stimulates the growth and differentiation…
- Caulophyllum thalictroides Blue cohosh
- Magnesium deficiency Can occur due to inadequate intake or impaired intestinal absorption of magnesium. Low magnesium…
- Proteus syndrome A disturbance of cell growth including benign tumors under the skin, overgrowth of the body, often more on…