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).
Collateral
In anatomy, a collateral is a subordinate or accessory part. A collateral is also a side branch, as of a blood vessel or nerve. After a coronary artery occlusion, collaterals (that is, collateral vessels) often develop to shunt blood…
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Show more- Mycobacterium tuberculosis The bacterium that causes tuberculosis. M. tuberculosis has unusually waxy walls, is slow-growing and among…
- Osteoclast A cell that nibbles at and breaks down bone and is responsible for bone resorption. Osteoclasts are large…
- Spastic paraplegia, autosomal dominant A degenerative disorder of nerves with progressive spasticity of the legs. Abbreviated as AD-HSP. Spasticity…
- Immunotoxin A hybrid molecule created by coupling an antibody or antigen with part or all of a toxin. The hybrid molecule…
- Slipped disc Rupturing of the tissue that separates the vertebral bones of the spinal column. The center of the disc…
- Vocal cord One of two small bands of muscle within the larynx. These muscles vibrate to produce the voice. The vocal…
- Internal genitalia, male See: Male internal genitalia
- Gua-sha A method in tradition Chinese medicine in which the skin on the back, limbs, and other parts of the body is…
- Greek medicine Medicine in Greece and the Greek world. The foundations of much of modern Western medicine lie in classical…
- Agent, antimicrobial See: Antimicrobial agent
- Occupational disease A disease due to a factor in a person's occupation. For example, lung disease in miners. Occupational…
- Stricture of the esophagus, chronic A narrowing or closure of the normal opening of the swallowing tube leading to the stomach, usually caused by…