What best defines the term 'definition' in writing?

The term 'definition' in writing is best defined as an explanation of how a word or concept is defined. This involves clarifying the meaning of a specific term or idea, often providing context to enhance the reader's understanding. In writing, definitions serve to eliminate ambiguity and provide a clear framework for discussing topics. Effective definitions can include examples or specific criteria that help the reader grasp the intended meaning fully.

In this context, options that do not focus on the act of defining a term or concept, such as a synonym for the main idea, a summary of the passage, or a critique of an argument, fall short of capturing the essence of what a definition entails. While those elements may be important in different types of writing, they are not directly related to the purpose of providing a clear definition. Hence, the explanation that a definition provides clarity around a word or concept stands out as the most accurate choice.