Here are some possibilities for what you might be thinking of:
* Terminology: This refers to the vocabulary used in a specific field or subject. It's the set of terms and their definitions that are used by experts in a particular area.
* Thermodynamics: This is a branch of physics that deals with heat and its relation to other forms of energy.
* Thermology: This is a less common term that might refer to the study of heat and its effects, similar to thermodynamics.
If you can provide more context or details about where you encountered the word "termology," I might be able to give you a more accurate answer.