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).
Drugs during pregnancy, dangerous
A teratogen is an agent that can disturb the development of the embryo or fetus. Teratogens halt the pregnancy or produce a congenital malformation (a birth defect). Classes of teratogens include radiation, maternal infections, chemicals…
Read the definitionRandom terms
Show more- Zoophobia An abnormal and persistent fear of animals. A phobia is an unreasonable fear that can cause avoidance and…
- Neurocysticercosis Infection of the brain by the larval form of the pork tapeworm Taenia solium. Neurocysticercosis is a form of…
- Anemia, aplastic See: Aplastic anemia
- Clonic seizure A seizure in which there are generalized clonic contractions with the entire body jerking, but without a…
- Hysterosalpingogram (HSG) A hysterosalpingogram imaging test that is used to examine the cavity of the uterus and Fallopian tubes. In a…
- Loeys-Dietz syndrome Loeys-Dietz syndrome: Loeys-Dietz syndrome is an inherited syndrome characterized by aortic aneurysms…
- Concussion of the brain A traumatic injury to the brain as a result of a violent blow, shaking, or spinning. A brain concussion can…
- Hay fever Hay fever: A seasonal allergy to airborne particles characterized by itchy eyes, runny nose, nasal…
- Mammary gland One of the two half-moon-shaped glands on either side of the adult female chest, which with fatty tissue and…
- Squamous-cell carcinoma See: Squamous cell carcinoma
- Cripple 1. A person who is lame or disabled. 2. To maim or disable a person. The word 'cripple' is a medically…
- Arachnophobia An abnormal and persistent fear of spiders. Sufferers from arachnophobia experience undue anxiety even though…