How is the term "defect" defined in Six Sigma?

In Six Sigma, a "defect" is defined as any instance where a process fails to meet customer requirements. This definition is foundational to understanding the aim of Six Sigma, which is to enhance quality by identifying and eliminating defects in processes. The focus is on meeting and exceeding customer expectations, which means that any failure to deliver what is expected constitutes a defect.

This concept is fundamental in quality management and aligns with the broader goal of achieving high performance and customer satisfaction. By recognizing defects, organizations can take necessary measures to minimize or eliminate them, leading to improved processes and better outcomes.