obsolescence

ob·so·les·cent   (ŏb'sə-lěs'ənt)    adj.   Being in the process of passing out of use or usefulness; becoming obsolete. Biology Gradually disappearing; imperfectly or only slightly developed. Used of an organ or other part of an animal or plant. [Latin obsolēscēns, obsolēscent-, present participle of obsolēscere, to fall into disuse : ob-, away; see ob- + solēre, to be accustomed to.] ob'so·les'cence n., ob'so·les'cent·ly adv.

obsolescence [(ob-suh-les-uhns)]

A decline in the value of equipment or of a product brought about by an introduction of new technology or by changes in demand. (See planned obsolescence.)

Main Entry: ob·so·les·cence
Pronunciation: "äb-s&-'les-^&ns
Function: noun
: a loss in the utility or value of property that results over time from intrinsic limitations (as outmoded facilities) or external circumstances
NOTE: Obsolescence is usually distinguished from depreciation and physical deterioration.

---

eco·nom·ic obsolescence
: obsolescence that results from external factors (as location) that render a property obsolete, no longer competitive, unattractive to purchasers or investors, or of decreasing usefulness economic obsolescence resulting from an adjacent waste facility>

---

func·tion·al obsolescence
/'f&[ng]k-sh&-n&l-/
: obsolescence deriving from a lack of adequate or appropriate equipment, space, or design