ballistocardiograph

from WordNet (r) 3.0 (2006)
ballistocardiograph
    n 1: a medical instrument that measures the mechanical force of
         cardiac contractions and the amount of blood passing
         through the heart during a specified period by measuring
         the recoil of the body as blood is pumped from the
         ventricles [syn: {ballistocardiograph}, {cardiograph}]
    

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