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).
Histamine
Substance that plays a major role in many allergic reactions. Histamine dilates blood vessels and makes the vessel walls abnormally permeable.
Read the definitionRandom terms
Show more- Bubonic plague The most common form of the plague, named for the characteristic buboes -- buboes are enlarged lymph nodes…
- Gastric emptying study Gastric emptying study: A gastric emptying study evaluates the emptying of food from the stomach. For a…
- Plastic surgeon A surgeon who specializes in reducing scarring or disfigurement that may occur as a result of accidents…
- Vascular Relating to the blood vessels of the body. The blood vessels of the body, as a group, are referred to as the…
- Vision, tunnel See: Tunnel vision
- Lymphadenopathy virus Another name for the human immunodeficiency virus (HIV), the cause of AIDS. HIV has also been called the…
- Lipoproteins Complexes of lipid and protein, the way lipids travel in the blood. Cholesterol, a building block of the…
- Postphlebitic syndrome See: Post-thrombotic syndrome
- Event, adverse See: Adverse event
- Training, cross Doing two or more aerobic activities such as jogging, bicycling, and swimming on a regular basis
- Tomography, computerized See: Computerized tomography
- Corneal Pertaining to the cornea, the clear front window of the eye that transmits and focuses light into the eye