The standard of a product, service or process compared to similar items
To satisfy specific customer or user requirements, Quality is a measure of excellence or a state of being that is free from defects, deficiencies and significant variations. To achieve the acceptable uniformity of quality in a product, a strict and consistent commitment to the agreed standards is necessary.
Some other popular definitions for quality, all of which are right, as they each contain a key element of what quality means to users of products and services, are listed below:
A degree of excellence;
Conformance to requirements;
Totality of characteristics which act to satisfy a need;