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).
Nef gene
Short for negative factor gene, a gene the absence (or defect) of which diminishes the strength of a disease. The term Nef gene was coined in 1989 in respect to HIV (the human immunodeficiency virus) and AIDS. The Nef gene in this…
Read the definitionRandom terms
Show more- Tyrosine An amino acid, one of the 20 building blocks of protein. A nonessential amino acid, tyrosine is produced from…
- Neuropathy, Charcot-Marie-Tooth See Charcot-Marie-Tooth disease
- Sodium The major positive ion (cation) in fluid outside of cells. The chemical notation for sodium is Na+. When…
- Cardiomyopathy, hypertrophic Heart disease. A nonspecific term applicable to any and all diseases of the heart. From cardio- + the Greek…
- Rale A type of abnormal lung sound heard through a stethoscope. Rales may be sibilant (whistling), dry (crackling)…
- Microduplication 22q11.2 syndrome A syndrome due to duplication of a tiny part of chromosome band 22q11.2. Features of the syndrome include the…
- Dysplastic nevi Atypical moles whose appearance is different from that of a common ordinary mole. Dysplastic nevi tend to be…
- Lobstein's disease Osteogenesis imperfecta type I. An inherited, generalized connective tissue disorder featuring bone fragility…
- Renal transplant Replacement of a diseased, damaged, or missing kidney with a donor kidney. Also called a kidney transplant…
- Nannycam See: Nanny cam
- Fever, Southeast Asian hemorrhagic A syndrome due to the dengue virus that tends to affect children under 10, causing abdominal pain, hemorrhage…
- Gynecology The branch of medicine particularly concerned with the health of the female organs of reproduction and…