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).
Collagenopathy
Any one of a group of disorders that affect connective tissue, the tissue that supports the body's joints and organs. The collagenopathies are caused by defects in type II or type XI collagen. Collagens are complex molecules that provide…
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Show more- Milligram A unit of measurement of mass in the metric system equal to a thousandth of a gram. A gram is equal to the…
- Script An informal colloquial term for a prescription. Derived from prescription by removing both its beginning and…
- Foreskin The fold of skin which covers the head (the glans) of the penis. Also called the prepuce. Only about 1 in…
- Apophysitis calcaneus Also called Sever's condition, this disorder is due to inflammation of the growth plate of the calcaneus, the…
- Exocrine gland A gland that secretes a substance out through a duct. The exocrine glands include the salivary glands, sweat…
- Anion A negatively charged ion. Pronounced an-I-on. An anion is as opposed to a cation, which is a positively…
- Dropsy An old term for the swelling of soft tissues due to the accumulation of excess water. In years gone by, a…
- Spasm A brief, automatic jerking movement. A muscle spasm can be quite painful, with the muscle clenching tightly…
- Idiopathy A disease or medical condition of unknown origin or which has no apparent cause. As in the idiopathy of…
- Vitamin B1 deficiency, infantile See: Infantile beriberi
- Heteroplasia The replacement of normal tissue of the body by abnormal tissue or by malpositioned normal tissue, a tissue…
- Test, radionucleide stress Stress: This procedure involves injecting a radioactive isotope (typically thallium or cardiolyte) into the…