| A | B |
| thermal | related to heat or temperature |
| endothermic | heated from within the body |
| thermoelectric | a direct relationship between heat and electricity |
| thermonuclear | related to the nuclear reaction that occurs only at high temperatures |
| thermometer | a tool that measures temperature or heat |
| thermos | a double-walled container with a vacuum between the walls which keeps substances at a constant temperature |
| exothermic | requires heat to be absorbed from outside of the body |
| thermostat | a device used to control the temperature |
| therm | heat |
| exo | outside |