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).
Adverse reaction
In pharmacology, any unexpected or dangerous reaction to a drug. An unwanted effect caused by the administration of a drug. The onset of the adverse reaction may be sudden or develop over time. Also called an adverse drug event (ADE)…
Read the definitionRandom terms
Show more- Alienist The term 'alienist' was heading for obsolescence until it was returned to a position of some prominence by…
- Elastin A protein that coil and recoils like a spring within the elastic fibers of connective tissue and accounts for…
- American College of Nurse-Midwives See: Nurse-midwife
- Fibrous dysplasia, polyostotic The lateral (outside) and smaller of the two long bones in the lower leg between the knee and ankle. (The…
- Transforming principle Name originally given to DNA. In 1944 Avery, MacLeod, and McCarty published their discovery that the…
- Elastase An enzyme that digests and degrades a number of proteins including elastin, an elastic substance in the lungs…
- Pediatric Pertaining to children
- Pulse, pistol-shot See: Pulse, water hammer
- Test, Denver Developmental Screening The Denver Developmental Screening Test (DDST) is a widely used assessment for examining children 0-6 years…
- International AIDS Vaccine Initiative See: IAVI
- Craniotomy A surgical operation in which an opening is made in the skull.
- Hard measles An acute highly contagious viral disease with fever, runny nose, cough, red eyes, and a spreading skin rash…