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).
Pupil dilation test
An examination that enables an eye care professional to see more of the retina, the light-sensitive layer of tissue at the back of the eye. Dilating (widening) the pupil permits the retina to be examined for signs of disease. To do this…
Read the definitionRandom terms
Show more- Hypochondriacal neurosis See: Hypochondriasis
- Johnny A hospital gown. A johnny is a short collarless gown that ties in the back, worn by patients being examined…
- Prune belly syndrome Partial or complete absence of the abdominal muscles so that the outlines of the intestines are visible…
- Disease, sleeping See: Sleeping disease
- Cancer of the pancreas See: Pancreatic cancer
- Dystocia, cervical See: Cervical dystocia
- Splenic artery A large artery within the abdomen that arises from an arterial vessel called the celiac trunk, which emerges…
- Vaginal infection, bacterial See: Bacterial vaginosis
- Eye, small Also called microphthalmia, an abnormally small eye, a congenital malformation (birth defect) of the globe…
- Ornithine transcarbamylase (OTC) deficiency A rare metabolic disorder, OTC is one of the urea-cycle disorders. The urea cycle is a series of five liver…
- Induration Induration: Localized hardening of soft tissue of the body. The area becomes firm, but not as hard as bone
- Pineal gland A small gland located deep within in the brain. It is believed to secrete melatonin, and may therefore be…