An enterprise may go to a lot of trouble to develop definitions. Some degree of standardization across these definitions is helpful. One aspect of standardization is dealing with terms that appear in definitions. Terms can be divided into two classes: Common Terms, which widely understood, and require no definition; and Defined Terms, which signify the concepts that the enterprise is defining. A major rule in definitions is that the term signifying the concept should not appear in the definition. This is a good idea for summary definitions, but it is hard to justify in full definitions. Thus, if one component of a definition is a summary, it is best to keep the term being defined out of the summary. However, the term should be allowed elsewhere in the definition. Common terms should be allowed in a definition with no special formatting. There is no need to distinguish them as something special. Indeed, this would be misleading. ...
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