ABSTRACT
A book entitled Quality Systems must contain, o f course, some def initions of terms. Therefore, we want to begin with a few basic explanations. To find the correct definition of a quality system, you first need to understand what is m eant by quality. However, even for this very first term there is no standard definition. Unlike nat ural science, where only clearly defined terms are perm itted, the whole subject area o f quality, quality assurance (QA), and quality m anagem ent is not easily described nor defined.