DELTA, in securities trading, is the relationship between an option price and the underlying futures contract or stock price. In general usage, it is the difference between two empirical data points, e.g. the delta between 4 and 6 is 2.
DEPLETION is the process of cost allocation that assigns the original cost of a natural resource to the periods benefited. For example: a mining company purchases mineral rights to a deposit for $5 million for a period of ten years. The cost of the natural resource, $5 million, will be depleted over the ten years of the benefit; i.e., it is the physical exhaustion of a natural resource (e.g., timber, oil and coal).
POSTING, in bookkeeping, is to list on the companys records, such as to list the detail of sales and purchases on the accounts receivable or payable records.
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