Depreciation:
1.Decrease in value of an asset such as a plant or equipment due to normal wear or passing of time; real property (land) does not depreciate.
2.
An annual reduction of income reflecting the loss in useful value of capitalized investments by reason of wear and tear.
The concept of depreciation recognizes that the purchase of an asset other than land will benefit several accounting cycles (periods) and should be expensed periodically over its useful life.
