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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Pneumothorax
Pneumothorax: Free air in the chest outside the lung. Pneumothorax can occur spontaneously ('out of the blue', with or without underlying lung disease), follow a fractured rib, occur in the wake of chest surgery, or be deliberately induced…
Read the definitionRandom terms
Show more- Chronic leukemia Cancer of the blood cells (leukemia) that progresses slowly
- Crohn ileitis Inflammation of the ileum (the farthest segment of the small intestine) due to Crohn disease. Crohn disease…
- Anisocytosis Excessive inequality in the size of the red blood cells. Anisocytosis ('aniso') is apparent on a blood smear…
- Thanatophobia An abnormal and excessive fear of death
- Cafe au lait spot A flat spot on the skin that is the color of coffee with milk (café au lait) in persons with light skin, or a…
- Glandular fever Glandular fever is infectious mononucleosis. 'Mono' and 'kissing disease' are popular terms for this very…
- Infiltrating lobular carcinoma of the breast Breast: Infiltrating lobular carcinoma is the second most common type of invasive breast cancer next to…
- Blood sugar, high An elevated level of the sugar glucose in the blood. Also called hyperglycemia. High blood sugar is a finding…
- Superaspirin A class of drugs that act in certain but not all ways like aspirin. Also known as Cox-2 inhibitors, these…
- Food security When people do not need to live with hunger or fear starvation
- Meckel's diverticulum An outpouching from the small intestine, due to failure of obliteration of the yolk stalk (which normally…
- Therapy, antiretroviral (ART) Treatment that suppresses or stops a retrovirus. One of the retrovirus is the human immunodeficiency virus…