1. The planned or unplanned impairment, for example by aging or wear, of an asset.
2. Depreciation is the reduction in the value of assets. This impairment is due to wear and tear, changes in the market price or other factors of diminution.
devaluation, devaluing, decrease in value, lowering in value, reduction in value
http://economictimes.indiatimes.com/definition/depreciation (1.); http://www.gruenderhelden.de/definition-was-ist-eine-abschreibung/ (2.)
Author: Frithjof Kühnert