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).
Ca
The symbol for calcium
Read the definitionRandom terms
Show more- Neck, wry Medically called spasmodic torticollis, or torticollis. The most common of the focal dystonias. In…
- Spinal muscular atrophy A genetic disease characterized by progressive loss of lower motor neurons (anterior horn cells) in the…
- Acid indigestion Excessive secretion of hydrochloric acid by the stomach cells. Medically known as hyperchlorhydria. Sometimes…
- Scopolamine Scopolamine: A venerable drug that is a naturally occurring member of a large chemical class of compounds…
- Mortality rate, neonatal The number of children dying under 28 days of age divided by the number of live births that year. The…
- Bursitis, hip Inflammation of a bursa of the hip joint. A bursa is a fluid-filled sac that functions as a gliding surface…
- Gallbladder agenesis This is a condition in which the gallbladder fails to develop. This happens in approximately one out of every…
- Sprain, metatarsophalangeal joint See: Metatarsophalangeal joint sprain
- Homeotherm A homeotherm is a warm-blooded animal (such as homo sapiens). Another term for us warm-blooded creatures is…
- Altitude, acclimatization to >The depth of respiration increases; >The pressure in the pulmonary arteries increases, forcing blood into…
- Cation In chemistry, a positively charged ion. Pronounced cat-I-on. A cation is as opposed to an anion, which is a…
- P.r.n. Abbreviation meaning 'when necessary' (from the Latin 'pro re nata', for an occasion that has arisen, as…