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).
Malformation, congenital
A physical defect present in a baby at birth, irrespective of whether the defect is caused by a genetic factor or by prenatal events that are not genetic. In a malformation, the development of a structure is arrested, delayed, or…
Read the definitionRandom terms
Show more- Contact eczema A localized reaction that includes redness, itching, and burning where the skin has come into contact with an…
- Positive, false A result that is erroneously positive when a situation is normal. An example of a false positive: a…
- Psoralen photochemotherapy See: PUVA
- Cervicitis Inflammation of the cervix
- Therapeutic touch A practice derived from an ancient technique called laying on of hands. It is based on the premise that it is…
- ALS6 See: Amyotrophic lateral sclerosis 6
- Calcium excess Overly high intake of calcium that can result in elevated levels of calcium in the blood (hypercalcemia)…
- Pacemaker, internal A device that uses electrical impulses to regulate the heart rhythm or to reproduce that rhythm. An internal…
- ETM2 A gene for essential tremor, uncontrollable shaking of the hands and head and sometimes other parts of the…
- Sympathetic nervous system A part of the nervous system that serves to accelerate the heart rate, constrict blood vessels, and raise…
- Autoimmune Pertaining to autoimmunity, a misdirected immune response that occurs when the immune system goes awry and…
- Thomas, Lewis (1913-1993) American physician, biologist, and eminent essayist. Thomas graduated from Princeton University…