cardiograph

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun medical instrument that records electric currents associated with contractions of the heart
noun 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

From cardio- + -graph.

Inventing an intricate instrument, the “Resonant Cardiograph,” Bose then pursued extensive researches on innumerable Indian plants. — Autobiography of a Yogi, Paramahansa Yogananda
[A17-95] The third component consists of a cardiograph which is a tracing obtained by attaching a pneumatic cuff around the left arm in a manner very similar to an apparatus which takes blood pressure. — Report of the President's Commission on the Assassination of President John F. Kennedy, United States. Warren Commission

electrocardiograph

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