In general terms, a definition argument can be structured as follows:
Introduction: Establishes a context for the argument by explaining the need for defining the term; presents the essay’s thesis
Evidence (first point in support of thesis): Provides a short definition of the term as well as an extended definition (if necessary)
Evidence (second point in support of thesis): Shows how the term does or does not fit the definition
Refutation of opposing arguments: Addresses questions about or objections to the definition; considers and rejects other possible meanings (if any)
Conclusion: Reinforces the main point of the argument; includes a strong concluding statement