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).
Eczema, allergic contact
Also called allergic contact dermatitis, this is a red, itchy, weepy reaction where the skin has come into contact with a substance that the immune system recognizes as foreign, such as poison ivy or certain preservatives in creams and…
Read the definitionRandom terms
Show more- Histidine An amino acid, one of the 20 building blocks of protein. An essential amino acid, histidine is present in…
- Cauda equina A bundle of spinal nerve roots that arise from the bottom end of the spinal cord. The cauda equina comprises…
- Informed consent A process in which a person learns key facts about a clinical trial, including potential risks and benefits…
- Urticaria Another name for the hives. Raised, itchy areas of skin that are usually a sign of an allergic reaction…
- Eczema Eczema: A particular type of inflammatory reaction of the skin in which there are typically vesicles (tiny…
- Gland, thyroid See: Thyroid gland
- Infection, urinary tract (UTI) An infection in the urinary system that begins when microorganisms cling to the opening of the urethra (the…
- Mutation, nonsense A mutation (a change) in a base in the DNA that prematurely stops the translation (reading) of messenger RNA…
- Lymphatic system The tissues and organs, including the bone marrow, spleen, thymus, and lymph nodes, that produce and store…
- Charles D. Kelman See: Phacoemulsification
- UAL UAL stands for ultrasonic-assisted liposuction. Liposuction involves the surgical suctioning of fat deposits…
- False negative A result that appears negative but fails to reveal a situation. An example of a false negative: a particular…