SINCE 1828
countershock
noun
coun·ter·shock
| \ -ˌshäk
\
\
Medical Definition of countershock
: a therapeutic shock of electricity applied to a heart for the purpose of altering a disturbed rhythm (as in chronic atrial fibrillation)
delivering a life-saving countershock within seconds of an arrhythmic episode— John Maurice
Comments on countershock
What made you want to look up countershock? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Farm Idioms Quiz
-
- What does 'poke' refer to in the expression 'pig in a poke'?
Test your vocabulary with our 10-question quiz!
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Word Games
Share countershock
Resources for countershock