An endothermic process is one in which heat has to be supplied to the system from the surroundings. A thermoneutral process is one that neither requires heat from the surroundings nor gives off energy to the surroundings.

What does endothermic mean?

1 : characterized by or formed with absorption of heat. 2 : warm-blooded.

What does endothermic or exothermic mean?

An exothermic process releases heat, causing the temperature of the immediate surroundings to rise. An endothermic process absorbs heat and cools the surroundings.”