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).
Sigmoidoscope
A thin lighted instrument used to view the inside of the rectum and lower colon
Read the definitionRandom terms
Show more- Medulla, adrenal The inner portion of adrenal gland. (The outer portion is the adrenal cortex). The adrenal medulla makes…
- Anorgasmy Or anorgasmia. Failure of a male or female to achieve an orgasm (climax) during sexual intercourse…
- Hospital-acquired infection An infection caught while hospitalized. The medical term for a hospital-acquired infection is 'nosocomial.'…
- Vena cava The superior vena cava is the large vein which returns blood to the heart from the head, neck and both upper…
- Agent, antimicrobial See: Antimicrobial agent
- Honey bee allergy Allergic reactions to stings of the honey bee (Apis mellifera). These reactions can include dizziness…
- Muscle, piriformis A muscle that begins at the front surface of the sacrum (the V-shaped bone between the buttocks at the base…
- Lyon hypothesis See Lyonization
- Yeast artificial chromosome (YAC) A vector (carrier) created and used in the laboratory to clone pieces of DNA. A YAC is constructed from the…
- Denervation Loss of nerve supply. There are many causes of denervation. Denervation may be due to a disease as, for…
- Sopor Abnormally deep sleep, an unusually profound sleep, a stupor from which it is difficult to rouse a person…
- Secondhand smoke Also known as environmental tobacco smoke (ETS). See: ETS