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).
Good Samaritan law
A law designed to protect a Good Samaritan from legal liability. Such laws usually specify that whoever in good faith provides emergency (and sometimes non-emergency) medical services shall not be civilly liable unless their acts…
Read the definitionRandom terms
Show more- Otitis externa Otitis externa: Infection of the skin covering the outer ear canal that leads in to the ear drum, usually due…
- Colon polyp family history See: Colon cancer family history
- Syndrome, Rett See: Rett syndrome
- Hydranencephaly A condition in which the cerebral hemispheres of the brain are absent and replaced by sacs filled with…
- Fibrous dysplasia, monostotic Excessive growth of hard fibrous tissue that replaces normal bone tissue in a single bone. Symptoms may…
- Ossicle Any small bone, such as the tiny bones within the human ear
- Cyclosporiasis Infection with the parasite Cyclospora cayetanensis. See: Cyclospora infection
- Pterygium A winglike triangular membrane. Although a pterygium can be anywhere, including behind the knee, it commonly…
- AIDS wasting syndrome The involuntary weight loss of 10% of baseline body weight plus either chronic diarrhea (two loose stools per…
- Ciguatera Seafood poisoning due to ciguatoxin, a toxin acquired by eating fish that have consumed toxic single-celled…
- Triskaidekaphobia Fear of the number 13. Written reference to this fear dates to the late 1800s. The term triskaidekaphobia…
- Crypto Popular name for both the parasite, Cryptosporidium parvum, and the disease it causes, cryptosporidiosis