What is the scientific definition of heat

Most of us use the word 'heat' to mean something that feels warm, but science defines heat as the flow of energy from a warm object to a cooler object.

Explanation:

Heat energy is the result of the movement of tiny particles called atoms, molecules or ions in solids, liquids and gases.

At a molecular level, heat is the transfer of energy that makes use of or stimulates disorderly molecular motion in the surroundings.