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).
Sign
Any objective evidence of disease. Gross blood in the stool is a sign of disease. It can be recognized by the patient, doctor, nurse, or others. In contrast, a symptom is, by its nature, subjective. Abdominal pain is a symptom. It is…
Read the definitionRandom terms
Show more- Macular cyst A hole in the macula, the tiny oval area made up of millions of nerve cells located at the center of the…
- Morbidity Illness, disease.
- Hematologist A physician who is specially trained in the diagnosis, treatment, and prevention of diseases of the blood and…
- Retinoblastoma Retinoblastoma: A malignant eye tumor in children, usually under age 5, that arises in cells in the…
- Periodic breathing Clusters of breaths separated by intervals of apnea (no breathing) or near-apnea. As opposed to normal…
- Pharyngeal Having to do with the throat (pharynx)
- CT colonography Another name for virtual colonoscopy. The term CT colonography provides a more accurate description of the…
- Psittacosis (parrot fever) Fever: An infectious disease due to a bacteria (Chlamydia psittaci) contracted from psittacine birds…
- DSS1 Or Dss1. A small protein important to the process of error-free DNA repair by recombination
- Aerotitis Middle ear problems due to changing atmospheric pressures, as when a plane descends to land. The problems…
- Agitated depression A major depressive disorder with restlessness and motor excitement. Agitated depression was once called…
- Babinski reflex An important neurologic test based, believe it or not, upon what the big toe does when the sole of the foot…