an apparatus for stopping fibrillation of the heart by application of an electric current to the chest wall or directly to the heart
WordReference Random House Unabridged Dictionary of American English © 2025
de•fi•bril•la•tor
(dē fī′brə lā′tər, -fib′rə-),USA pronunciation n. [Med.]
- Medicinean agent or device for arresting fibrillation of the atrial or ventricular muscles of the heart.
- de- + fibrill(ation) + -ator 1955–60
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