MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
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).
Alpha helix
The coiled structure of many proteins consisting of a single chain of amino acids stabilized by hydrogen bonds. The alpha helix was first proposed by Linus Pauling and Robert Corey in a brilliant series of paper in the early 1950s. It is…
Read the definitionRandom terms
Show more- Multidetector CT See: Multidetector computed tomography
- Cranial bone Part of the top portion of the skull which protects the brain. The bones of the cranium include the frontal…
- T-cell depletion A disease in which certain cells of the lymphoid system called T lymphocytes or T cells are malignant. T…
- Me-too drug A drug that is structurally very similar to already known drugs, with only minor differences. The term…
- Nondisjunction Failure of paired chromosomes to disjoin (separate) during cell division so that both chromosomes go to one…
- Hemopoietic See: Hematopoietic
- Sleep paralysis A frightening form of paralysis that occurs when a person suddenly finds himself or herself unable to move…
- Pseudoobstruction, myopathic Intestinal pseudoobstruction caused by damage to muscle cells in the walls of the bowel
- Jacksonian epilepsy See: Epilepsy, Jacksonian
- Cancer, adult primary liver A tumor in which the cancer starts during adulthood in cells in the liver. Also called hepatocellular…
- Paget disease of the breast The combination of scaly skin changes of the nipple resembling eczema and an underlying cancer of the breast…
- Staff of Aesculapius A rod or stick with the snake curled around it is the staff (the rod) of Aesculapius (also called Asklepios)…