Final answer:
In the reaction A + B + C → ABC, the ABC represents the product, which is the compound formed from the combination of reactants A, B, and C.
Step-by-step explanation:
In the chemical reaction A + B + C → ABC, the term ABC represents the product of the reaction. This occurs when reactants A, B, and C combine through chemical processes to form a new compound. In the context provided by LibreTexts, if we consider a series of steps wherein substrates are converted to products with the aid of enzymes, each individual reaction step converts reactants to products, as seen in figures and explanations that outline the role of enzymes in facilitating these transformations. For instance, in a dimerization reaction, two monomers combine to form a dimer, which is the product. Therefore, in the given reaction, ABC is the compound formed as a result of the reactants combining.