MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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).
Duodenum
The first part of the small intestine. The duodenum extends from the pylorus at the bottom of the stomach to the jejunum, the second part of the small intestine. The duodenum is a common site for the formation of peptic ulcers. We often…
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Show more- Fracture, clay-shoveler's An uncommon breakage of the spine of the vertebrae from the lower neck or upper back as a result of stress…
- Acute otitis media Otitis media: Inflammation of the middle ear in which there is fluid in the middle ear accompanied by signs…
- Stenosis, spinal See: Spinal stenosis
- Contraceptive sponge, vaginal A contraceptive device that is donut-shaped, made of plastic, contains a spermicide (nonoxynol-9) and is…
- Cycle, menstrual See: Menstrual cycle
- Midwife, certified professional See: Certified professional midwife
- Fear of fur An abnormal and persistent fear of fur is called doraphobia. Sufferers of this fear avoid fur-bearing animals…
- Syndrome, sick sinus Symptoms of dizziness, confusion, fainting, and heart failure due to a problem with the sinus node of the…
- Aortic insufficiency Incomplete closure of the aortic valve resulting in aortic regurgitation, the return of blood from the aorta…
- CD4 A large glycoprotein molecule found on the surface of T lymphocytes that serves as the receptor for HIV. The…
- Penis The external male sex organ used to copulate and ejaculate semen and to convey urine outside the body. In…
- T lymphocyte, cytotoxic See: Cytotoxic T-lymphocyte