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).
Nurse, registered
A nurse who has completed a two- to four-year degree program in nursing, and provides direct patient care for acutely or chronically ill patients. RNs may further specialize in a particular area. For example, psychiatric nurses are RNs…
Read the definitionRandom terms
Show more- Effective dose The dose of a drug that will achieve the desired effect
- Matter, gray The cortex of the brain which contains nerve cell bodies. The gray matter is as opposed to the white matter…
- Blood-brain barrier A protective network of blood vessels and cells that filters blood flowing to the brain.
- National Institute of Neurological Disorders Stroke (NINDS): One of the National Institutes of Health in the U.S., the NINDS's mission is to 'support and…
- Bioterrorism Bioterrorism: Terrorism using biologic agents. Biological diseases and the agents that might be used for…
- Tarsal gland See: Meibomian gland
- Newborn hearing screen Testing of the newborn baby's ability to hear. Newborn screening of hearing is done with automated auditory…
- Radical neck See: Radical neck dissection
- Antidepressant, SSRI A selective serotonin reuptake inhibitor (SSRI), one of the commonly prescribed drugs for treating…
- Priapism Abnormally persistent erection of the penis in the absence of sexual desire. Priapism can occur in persons…
- Human herpesvirus 3 See herpes zoster.
- Vaccinia, disseminated See Progressive vaccinia