obsolescence
obsolescence (ob-s[schwa]-les-[schwa]nts). 1. The process or state of falling into disuse or becoming obsolete. 2. A diminution in the value or usefulness of property, esp. as a result of technological advances. • For tax purposes, obsolescence is usu. distinguished from physical deterioration. Cf. DEPRECIATION. [Cases: Taxation 348(4).] economic obsolescence. Obsolescence that results from external economic […]