The process or act of making something expensive or costly; the conversion of something into an expense.
From 'expense' with the '-ilation' suffix (from Latin '-ilatio'), a productive suffix forming nouns of action. This word appears to be a neologism or technical term combining Latinate morphology.
This word is genuinely rare and might be a technical term in accounting or economics—it names the process of turning something into an expense item. It shows how English can borrow Latin's suffix patterns to create precise technical vocabulary.
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