affecting the rate or timing of a physiologic process, as the heart rate.
Origin of chronotropic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Affecting the rate of rhythmic movements, such as the heartbeat.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.