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).
Acute HIV infection
The body's initial reaction to infection by the HIV virus. Acute HIV infection is a flu-like syndrome that occurs immediately after a person contracts HIV (the human immunodeficiency virus 1, the agent that causes AIDS). The syndrome is…
Read the definitionRandom terms
Show more- Schonlein-Henoch purpura A form of blood vessel inflammation (vasculitis) that typically affects small arterial vessels (capillaries)…
- XX The sex chromosome complement of a normal human female. See also X chromosome
- Anus, imperforate A congenital malformation (a birth defect) in which the rectum is a blind alley (a cul-de-sac) and there is…
- Heart, artificial A manmade heart. An artificial heart was temporarily implanted in 1969 by Denton Cooley in Houston, Texas…
- Macroglossia Enlarged tongue. Macroglossia is sometimes said to be associated with Down syndrome, but in that disorder the…
- Map, linkage A map of the genes on a chromosome based on linkage analysis. A linkage map does not show the physical…
- Juvenile polyposis coli See: Juvenile polyposis
- Immunotoxin A hybrid molecule created by coupling an antibody or antigen with part or all of a toxin. The hybrid molecule…
- Acute necrotizing ulcerative gingivitis (ANUG) This is trench mouth, a progressive painful infection with ulceration, swelling and sloughing off of dead…
- Fluorouracil A much-used anticancer drug that belongs to the family of drugs called antimetabolites. Full name…
- Angina trachealis Angina trachealis: This has nothing whatsoever to do with the usual type of angina (angina pectoris) which is…
- Ophthalmoscope A lighted instrument, one of the most important tools of the physician, used to examine the interior of the…