Eli5 is there no such thing as cold?

Question

My SO said the above statement and gave me an explanation “Cold is the absence of heat or energy”, it does make sense however in my head it is like saying (in very simplistic terms) “the countryside is the absence of a city” and that is just a ridiculous statement.

In: 66

Answer 1

It’s like saying stillness is a lack of motion. It’s an apophatic definition, but “there is no such thing as cold” is false. It’s Kelvin 0.