fibrillation

Definition

The rapid, irregular, and unsynchronized contraction of the muscle fibers of the heart.

Etymology

From fibrilla + -ation.

Example Sentences

• "Though occasionally a “flatliner” can be revived with a defib, it is most commonly used to change the uncoordinated contractions of the heart (fibrillation) into a normal sinus rhythm—that is, to defibrillate the heart."
• "The most common type of irregular heartbeat is atrial fibrillation or AFib. It is estimated that between three and six million people in the United States have AFib."

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