Final answer:
Walker Percy is a literary figure, not associated with a scientific preformulation; thus, his definition of 'preformulation' might be abstract, reflecting preliminary conceptual understanding.
Step-by-step explanation:
The term 'preformulation' as defined by Walker Percy in the context of his philosophical and literary work, is likely to be a metaphorical or abstract concept rather than a technical term. Percy was a Southern author known for his philosophical explorations of the human condition, and not for scientific or pharmaceutical preformulation which relates to the preparation of substances in the development of medications.
Given the abstract nature of Percy's works, a direct answer to what 'preformulation' might mean according to him would likely revolve around the preparation of ideas or the preliminary understanding of a subject before it is fully formed. However, because this is a specific interpretation of Percy's use of language, without a direct reference to where Percy uses the term 'preformulation', we are left to make educated assumptions based on his literary style and philosophical themes.