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).
Varicella rash
Rash: Varicella (chickenpox) is characterized by a rash, often the first sign of the disease. The rash of chickenpox develops in crops with raised red spots arriving first, progressing to blisters that burst, creating open sores, before…
Read the definitionRandom terms
Show more- Infant, postmature A baby born 2 weeks (14 days) or more after the usual 9 months (280 days) of gestation. The gestation (length…
- HHV-4 Human herpesvirus 4. See Epstein-Barr virus.
- Tone deafness The inability to recognize musical tones or reproduce them. Also called amusia
- Cysteine An amino acid, one of the 20 building blocks of protein. Cysteine can be synthesized by the body and is not…
- Northern blot A technique in molecular biology, used mainly to separate and identify pieces of RNA. Called a Northern blot…
- Allergy and Infectious Diseases, National Inst. One of the U.S. National Institutes of Health (NIH), the mission of the NIAID is 'to support and conduct…
- Segment, genomic A region of the genome; it encompasses objects described as loci or probes. Genomic segments can range in…
- AFO (ankle-foot orthosis) Ankle-foot orthosis
- Epiretinal membrane A thin membrane that covers the sclera (the white of the eye). "Epi-" is a prefix from the Greek that means…
- ACOG (Amer College of Ob & Gyn) ACOG (American College of Obstetricians and Gynecologists): The American College of Obstetricians and…
- Sporadic primary pulmonary hypertension See: Pulmonary hypertension
- Syncope, vasovagal See: Vasovagal syncope