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).
Ribosomal RNA
A molecular component of a ribosome, the cell's essential protein factory. Ribosomal RNA (rRNA) fabricates polypeptides (assemblies of amino acids that make up proteins). A tiny particulate structure located in the cytoplasm of the cell…
Read the definitionRandom terms
Show more- Library of Medicine, National (NLM) The world's largest medical library, the U.S. National Library of Medicine (NLM) is part of the National…
- Ray, Roentgen See: Roentgen ray
- Pleurisy Pleurisy: Inflammation of the pleura, the linings surrounding the lungs. There are two layers of pleura; one…
- MRCP Magnetic resonance cholangiopancreatography, an application of MRI (magnetic resonance imaging) to the…
- Cyst, ovarian A fluid-filled sac in the ovary. The most common type of ovarian cyst is called a follicular cyst. It results…
- Sagittal A crucial large vein that goes over the top of the skull from front to back and then splits to take blood…
- Body stuffing The swallowing of relatively small amounts of loosely wrapped illicit drugs because of the fear of arrest
- Renal calculi Kidney stones. A common cause of blood in the urine and pain in the abdomen, flank, or groin. Occurs in 1 in…
- Pancreas, artificial A machine that constantly measures glucose (sugar) in the blood and, in response to an elevated level of…
- PLP1 The gene encoding proteolipid protein, or lipophilin, the primary constituent of myelin. The PLP1 gene is on…
- Disorder, seasonal affective (SAD) Depression that tends to occur (and recur) as the days grow shorter in the fall and winter. It is believed…
- Cord, vocal See: Vocal cord