The correct spelling of the word "heurism" is actually "heuristics," which refers to a problem-solving approach that uses practical or common-sense methods, rather than theoretical or logical ones. It is pronounced as /hjʊəˈrɪstɪks/, with the stress on the second syllable. The "heur-" prefix means "to discover" or "find," while the "-istics" suffix denotes a field of study. Therefore, heuristics can be defined as the art and science of discovering or finding solutions to problems using practical methods.