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- DictionaryChem·is·try/ˈkeməstrē/
noun
- 1. the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.
- 2. the complex emotional or psychological interaction between two people: "their affair was triggered by intense sexual chemistry"