Applying the standard or going rate
The first derivative is the rate of change, and the second derivative is the rate of change of the rate of change.
To rate or chide vehemently; to scold.
3
The value of something
You have a heart. It beats periodically. The rate at which it does so is your heart rate. If you don't have a heart rate, then your heart isn't beating, meaning you're dead or dying.
Stimulants
Chemical equilibria are dynamic, meaning the forward rate and reverse rate are equal.
Target Heart Rate
The rate or degree of movement in time.
Theriyathu
It is a built-in rate at which it initiates electical impulses, meaning that the AV node has a rate range at which it usually produces impulses.