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.
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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).
Melanoma, lentigo maligna
One of the four clinical types of malignant melanoma and the slowest growing one. It typically begins as a patch of mottled pigmentation that is dark brown, tan, or black on sun-exposed skin, such as on the face
Read the definitionRandom terms
Show more- Ventricle, third >Lateral ventricles: The lateral ventricles are in the cerebral hemispheres, one in each hemisphere. Each…
- Fever, undulant An infectious disease due to the bacteria Brucella that characteristically causes rising and falling fevers…
- Vitamin B5 Vitamin B5 is pantothenic acid, one of the less well known B vitamins, perhaps because it is widely…
- Sphingomyelinase deficiency Also called Niemann-Pick disease, this is a disorder of the metabolism of a lipid (fat) called sphingomyelin…
- Bone mineral density BMD, a measure of bone density, reflecting the strength of bones as represented by calcium content. The BMD…
- Medigap Health insurance in the US that is intended to supplement Medicare benefits and presumably to fill the gaps…
- Eyelid myokymia Fine continuous contractions of the eyelid muscle, typically involving one of the lower eyelids, less often…
- TSC1 The tuberous sclerosis 1 gene. The product of the TSC1 gene is a protein called hamartin. This protein…
- Diabetic dermopathy A skin condition characteristic of diabetes involving light brown or reddish oval or round scaly patches…
- Craniopagus Conjoined twins whose heads are fused together. From cranio-, relating to the cranium + the Greek pagos…
- Mucocutaneous lymph node syndrome A syndrome of unknown origin that mainly affects young children. It causes fever, reddening of the eyes…
- Power-of-attorney for health-care decision-making See: Proxy. health care.