Pyrochemical is a word that refers to the chemical reactions caused by high temperatures. Some synonyms for this word include thermal chemistry, high-temperature chemistry, and combustion chemistry. These words refer to the same concept of chemical reactions that take place at high temperatures, whether they are used in a controlled laboratory setting or in industrial applications. Other synonyms for pyrochemical include exothermic reactions, thermochemistry, and thermodynamics. These words help describe the complex processes that occur when materials are heated to extreme temperatures, and they are often used in the fields of nuclear science, metallurgy, ceramics, and manufacturing.