chemistry /ˈkɛm.ɪ.stɹi/ noun5 •the science of what things are made of and how they change when they are mixed or heated •(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. •An application of chemical theory and method to a particular substance.The aquatic chemistries of iron and manganese are similar; this “is reflected geologically in their common association in rocks of all kinds” (Bortleson and Lee, 1974). — 1984 •The chemical properties and reactions of a particular organism, environment etc. •(informal, nonstandard) 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. formschemistries