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).
Sigmoidoscopy
Inspection of the rectum and lower colon using a thin lighted tube called a sigmoidoscope. Samples of tissue or cells may be collected for examination under a microscope. Also called proctosigmoidoscopy
Read the definitionRandom terms
Show more- Penile Of or pertaining to the penis
- Gy Abbreviation for gray
- Cerebral arterial gas embolism (CAGE) Gas bubbles traveling and lodging (embolizing) in the arteries that supply the brain with blood (and oxygen)…
- Achondrogenesis type II A severe inherited disorder of bone growth characterized by a short body and limbs and a lack of bone…
- Fear of children An abnormal and persistent fear of babies and children. Sufferers experience anxiety even though they realize…
- Phytanic acid storage disease See Refsum disease
- Intrauterine contraceptive device (IUD) A device inserted into the uterus (womb) to prevent conception (pregnancy). The IUD can be a coil, loop…
- ACE inhibitors ACE inhibitors: A drug that inhibits ACE (angiotensin converting enzyme) which is important to the formation…
- Yard In length, 3 feet or 36 inches or, metrically, 91.44 centimeters. The yard, along with the foot and inch, are…
- Negative clinical trial A clinical trial that shows that a new treatment is inferior to standard treatment. See: Clinical trials. See…
- James Ramsay Hunt See: Ramsay Hunt, James
- Lateral femoral cutaneous nerve syndrome See: Meralgia paresthetica