I'm looking for a word for the property of liquids that means the liquid has a high resistance to temperature change. The closest thing I've found is 'high specific heat capacity' but it's a one-word term. I heard it on a science TV show I was watching and I can't remember what the word was.
Clarification: I mean it takes a lot of energy to change the temperature. but the word I'm looking for means specifically that the liquid has a high specific heat capacity