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chronotropic

American  
[kron-uh-trop-ik, -troh-pik] / ˌkrɒn əˈtrɒp ɪk, -ˈtroʊ pɪk /

adjective

  1. affecting the rate or timing of a physiologic process, as the heart rate.


Etymology

Origin of chronotropic

chrono- + -tropic