What is the term that refers to a temperature spread in a water heater tank that results in the first water out of the tank being too hot to be safe?

Question

Quizplus · Accepted Answer

Stacking refers to the phenomenon where short, frequent draws of hot water cause the top of the water heater tank to become hotter than the set temperature, leading to the first water out being excessively hot.

What Is the Term That Refers to a Temperature Spread