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).
Polymerase, RNA
Enzyme that catalyzes (speeds) the polymerization of RNA. RNA polymerase uses preexisting nucleic acid templates and assembles the RNA from ribonucleotides.
Read the definitionRandom terms
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- Calcitriol The active form of vitamin D. Calcitriol is formed in the kidneys or made in the laboratory. It is used as a…
- Sickle cell disease A genetic blood disease due to the presence of an abnormal form of hemoglobin, namely hemoglobin S…
- BPH A balance disorder that results in the sudden onset of dizziness, spinning, or vertigo when moving the head.
- American College of Nurse-Midwives See: Nurse-midwife
- Therapy, estrogen replacement (ERT) Estrogen replacement therapy (ERT) is used to treat menopause. It reduces or stops the short-term changes of…
- Pesthouse A hospital where people suffering from infectious disease were once confined and sometimes treated. 'I…
- Liver biopsy Liver biopsy: A procedure in which a small sample of the liver is removed for the diagnosis of abnormal liver…
- Travel medicine Travel medicine: A branch of medicine that specializes in diseases and conditions that are acquired during…
- Axis The axis is the second cervical vertebra (symbol: C2). It is called the 'axis' because the uppermost cervical…
- Compulsive shopping An obsession with shopping that significantly interferes with the functioning of the individual. The signs…