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).
Meningitis, bacterial
Inflammation of the meninges due to a bacterial infection. Haemophilus influenzae type b (Hib) was the leading cause of bacterial meningitis before the 1990s, but new vaccines given to children as part of their routine immunizations have…
Read the definitionRandom terms
Show more- Peromyscus leucopus See: White-footed mouse
- Motion, range of The range through which a joint can be moved, usually its range of flexion and extension. Due to an injury…
- Bed blocker A patient who uses a hospital bed for a long period of time because they are chronically ill. The patient…
- Johnson-Stevens syndrome See: Stevens-Johnson syndrome.
- Immunization, influenza Influenza: See Immunization, flu
- Institute of Medicine One of the National Academies of the United States. The Institute of Medicine conducts policy studies on…
- Aortic valve One of the four valves in the heart, this valve is situated at exit of the left ventricle of the heart where…
- Nocturnal enuresis Bedwetting at night. From the Greek 'enourin' meaning 'to urinate in.'
- RNA virus, positive-strand See: Positive-strand RNA virus
- Middle ear There are three sections of the ear. They are the external ear, the middle ear, and the inner ear. The middle…
- High altitude Altitude sickness occurs at high altitude. So what is high altitude? Altitude is defined on the following…
- Disease, occupational A disease due to a factor in a person's occupation. For example, lung disease in miners. Occupational…