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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Atonic seizure
A seizure in which the person suddenly loses muscle tone and strength and, unless supported, falls down. Also called drop attack or drop seizure. Atonic means a lack of muscle tone and strength
Read the definitionRandom terms
Show more- Androgen A male sex hormone that promotes the development and maintenance of the male sex characteristics. The major…
- Betel nut The nut of the Areca palm tree and an ingredient of betel nut quid, an addictive mix chewed in some Pacific…
- G6PD deficiency G6PD deficiency: Deficiency of the enzyme glucose-6-phosphate dehydrogenase (G6PD), the most common enzyme…
- Brain edema See: Cerebral edema
- Vein, small saphenous The smaller of the two saphenous veins, the principal veins that run up the leg superficially (near the…
- CLL Chronic lymphocytic leukemia. See: Leukemia, chronic lymphocytic
- Hecht-Beals syndrome See: Hecht syndrome
- Syndrome, Bloch-Sulzberger Also known as incontinentia pigmenti (IP). A genetic disease with blisters that develop soon after birth on…
- Tonic-clonic seizure The classic type of epileptic seizure consisting of two phases to a tonic-clonic seizure -- the tonic phase…
- Acquired immunodeficiency syndrome AIDS. AIDS is a disease due to infection with the human immunodeficiency virus (HIV). Also referred to as…
- Appendix perforation Rupture of appendix
- Placental growth factor A type of vascular endothelial growth factor. Placental growth factor is expressed not only in placental…