Thermatic
An object that is thermos-like in nature. Able to keep cold liquids cold and hot ones hot.
Suzanne drank green tea from Mark's coffee mug at the Laguna Beach, my it was still warm after 3 hours... That mug was very thermatic!
Thermatism
Expressing symptoms of extreme autism while not diagnosed with current autism in a certain situation
Joe showed some thermatism after blurting out political facts in our conversation