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.
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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…
Read the definitionRandom terms
Show more- IUGR 1. Originally, intrauterine growth retardation.2. More recently, intrauterine growth restriction.
- AKA (above the knee amputation) In general usage, this would be read to mean 'also known as.' For example, William Jefferson (aka 'Bill')…
- HDL Lipoproteins, which are combinations of lipids (fats) and proteins, are the form in which lipids are…
- Rochalimaea quintana Now preferentially referred to as Bartonella quintana, this is an unusual rickettsial organism that can…
- Water on the brain Known medically as 'hydrocephalus', this is an abnormal buildup of cerebrospinal fluid (CSF) in the…
- Osseous Having to do with the bone, consisting of bone, or resembling bone. From 'os' which is a synonym for 'bone.'…
- In situ hybridization The use of a DNA or RNA probe to detect the complementary sequence. In situ hybridization is like all nucleic…
- Adducted thumbs with mental retardation A syndrome with the following characteristic features: > >neurologically: mental retardation and aphasia…
- Luetic 1. Relating to syphilis, caused by it, or suffering from it.2. A person with syphilis. From lues, an old name…
- Rx A medical prescription. The symbol 'Rx' is usually said to stand for the Latin word 'recipe' meaning 'to…
- Durable power of attorney This is a type of advance medical directive in which legal documents provide the power of attorney to another…
- Monoamine oxidase inhibitor One of a potent class of medications used to treat depression. Abbreviated MAOI.