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).
Opium
An addictive narcotic drug derived from the unripe seedpods of the opium poppy. Preparations of opium were called laudanum. Derivatives of laudanum include paregoric (a drug to treat diarrhea), morphine and heroin. For centuries, opium was…
Read the definitionRandom terms
Show more- High-grade lymphoma A lymphoma that grows and spreads quickly but has a better response to anticancer drugs than that seen with…
- Genome, mitochondrial All of the genetic information contained in the chromosome of the mitochondrion, a structure located in the…
- Tinnitus Tinnitus: 'Ringing in the ears' or another noise that seems to originate in the ears or head. Tinnitus is due…
- Neurological Having to do with the nerves or the nervous system
- Heat index The temperature the body feels when heat and humidity are combined. The body dissipates heat by varying the…
- Duplication Part of a chromosome in duplicate, a particular kind of mutation (change) involving the production of one or…
- Infectious mono See infectious mononucleosis.
- Fever, dengue hemorrhagic (DHF) A syndrome due to the dengue virus that tends to affect children under 10, causing abdominal pain, hemorrhage…
- Menorrhagia Excessive uterine bleeding occurring at the expected intervals of the menstrual periods. The bleeding from…
- FTT Failure to thrive. Refers to a child whose physical growth is significantly less than that of peers. There is…
- PVNS Pigmented villonodular synovitis
- Substance 1. Material with particular features, as a pressor substance.2. The material that makes up an organ or…