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).
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- Patient autonomy The right of patients to make decisions about their medical care without their health care provider trying to…
- Macular hole A hole in the macula, the tiny oval area made up of millions of nerve cells located at the center of the…
- Span, memory The number of items, usually words or numbers, that a person can retain and recall. Memory span is a test of…
- Leper 1. Someone with leprosy (Hansen disease). The term leper is now in disfavor. 2. By extension, a pariah. A…
- Multicentric Having more than one center. A term often applied to tumors. A minority of Wilms tumors are multicentric and…
- Typist's cramp A dystonia that affects the muscles of the hand and sometimes the forearm and only occurs during handwriting…
- Listeria A group of bacteria capable of causing miscarriage (spontaneous abortion), stillbirth and premature birth and…
- Cancer, larynx Cancer of the voice box (the larynx) which is located at the top of the windpipe (trachea). Also called…
- Fever, typhoid See: Typhoid fever
- Ankylosing Undergoing ankylosis (stiffening or fusion of a joint)
- Resistance, vascular The opposition to the flow of blood across a vascular bed.
- Recurrent abortion The occurrence of 3 or more miscarriages (which are medically termed 'spontaneous abortions') with no…