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).
Colorectal cancer
Cancer of the colon and rectum. A malignant tumor arising from the inner wall of the large intestine. Risk factors include heredity, colon polyps, and long standing ulcerative colitis. Most colorectal cancers develop from polyps. Removal…
Read the definitionRandom terms
Show more- Ascending pathway A nerve pathway that goes upward from the spinal cord toward the brain carrying sensory information from the…
- Eye, small Also called microphthalmia, an abnormally small eye, a congenital malformation (birth defect) of the globe…
- Med-school syndrome See: Medical school syndrome
- Pachyonychia Elephant nail, a fingernail or toenail that is abnormally thick. From the Greek pachys, thick + onyx, nail =…
- Urachus A canal connecting the bladder of the fetus with the allantois, a structure that contributes to the formation…
- MCAT The Medical College Admissions Test, a test that is required of all applicants to medical school in the U.S…
- Laser, argon See: Argon laser
- Cyanosis A bluish color of the skin and the mucous membranes due to insufficient oxygen in the blood. For example, the…
- Ectopia cordis A type of birth defect in the heart is abnormally located. In ectopia cordis, the heart usually protrudes…
- Natriuretic Causing natriuresis, the excretion of an excessively large amount of sodium in the urine. A hybrid of the…
- Lipomatosis, multiple symmetric A disorder characterized by painless symmetrical diffuse deposits of fat beneath the skin of the neck, upper…
- Therapeutic touch A practice derived from an ancient technique called laying on of hands. It is based on the premise that it is…