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).
Nucleosome
Structure responsible in part for the compactness of a chromosome. Each nucleosome consists of a sequence of DNA wrapped around a core of histone (a type of protein).
Read the definitionRandom terms
Show more- Hemolytic disease of the newborn Abnormal breakup of red blood cells in the fetus or newborn. This is usually due to antibodies made by the…
- Cup, optic The white, cup-like area in the center of the optic disc. The optic disk is the circular area at the back of…
- Orthopaedics The branch of surgery broadly concerned with the skeletal system (bones). This particular term is commonly…
- ZAP-70 Zeta-chain-associated protein kinase 70. A member of the protein tyrosine kinase family, ZAP-70 is normally…
- Otitis interna Inflammation of the inner ear. Sometimes used as a synonym for labyrinthitis, inflammation of the labyrinth…
- Memory, recent Short-term memory. Also called working memory. Recent memory is a system for temporarily storing and managing…
- Catheter A thin, flexible tube. For example, a catheter placed in a vein provides a pathway for giving drugs…
- Sleep, rapid eye movement Sleep, rapid eye movement: REM sleep is the portion of sleep when there are rapid eye movements (REMs)…
- Warble A small hard nodule produced by the larva of a fly that has penetrated the skin. The warble can be…
- Low placenta Location of the placenta in the lower part of the uterus (womb) so that the placenta partially or completely…
- Breast fibroadenoma A common benign (not malignant) tumor of the breast. Usually called simply a fibroadenoma. For more…
- Big bone disease See: Kashin-Beck disease