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- Gland, pituitary The main endocrine gland. It is a small structure in the head and is called the master gland because it…
- Zona pellucida The strong membrane that forms around an ovum as it develops in the ovary. The membrane remains in place…
- Pitting edema Observable swelling of body tissues due to fluid accumulation that may be demonstrated by applying pressure…
- Syndrome, phantom limb See Phantom limb syndrome
- ART (antiretroviral therapy) Treatment that suppresses or stops a retrovirus. One of the retrovirus is the human immunodeficiency virus…
- Federal Emergency Management Agency Better known as FEMA, an agency of the US government dedicated to rapid response to disasters, both man-made…
- Replication A turning back, repetition, duplication, reproduction
- Cortex, adrenal The outer portion of the adrenal gland located on top of each kidney. The adrenal cortex produces steroid…
- Pucker, macular See: Macular pucker
- Developmental disorder, specific A disorder that selectively affects one area of development, sparing essentially all other areas of…
- Retrospective Looking backward on the past, on what has already taken place. A retrospective study looks backward in time…
- Miasmic Pertaining to a miasma, a poisonous vapor or mist that was once widely believed to be made up of particles…