Definition of "chemistry" in English

noun

1. (uncountable) The branch of natural science that deals with the composition and constitution of substances and the changes that they undergo as a consequence of alterations in the constitution of their molecules.

2. (countable) An application of chemical theory and method to a particular substance.

3. The chemical properties and reactions of a particular organism, environment etc.

4. (informal) The mutual attraction between two people; rapport.

   • The on-screen chemistry between the lead actors led many viewers to believe they were a couple in real life.
   • The coach attributed their losses to poor team chemistry.

5. (medicine, countable, informal, sometimes proscribed) A blood test to measure the amount of various components of the serum (such as electrolytes, creatinine, and glucose).

   • Diagnosis is presumptive by history and physical examination and is confirmed by chemistries.