| A | B |
| endothermic | heated from within the body |
| exothermic | requires heat to be absorbed from outside of the body |
| therm | a unit of heat equal to 1,000 great calories |
| thermal | related to heat or temperature |
| thermodynamic | caused or operated by heat that has changed into different forms of energy |
| thermograph | a device that automatically records changes in temperature |
| thermometer | an instrument that measures temperature or heat |
| thermophile | an organism that has adapted to living in very high temperatures |
| thermos | a double-walled container that keeps things warm |
| thermostat | a device used to control the temperature |