obsolescence

n.

废弃；陈旧过时；（器官的）废退；

Aging, Obsolescence, and Organizational Innovation
An Economic Theory of Planned Obsolescence
AN ECONOMIC THEORY OF PLANNED OBSOLESCENCE.
Thymic involution with ageing: obsolescence or good housekeeping?
The rate of obsolescence of patents, research gestation lags, and the private rate of return to research resources
The Rate of Obsolescence of Knowledge, Research Gestation Labs, and the Private Rate of Return to Research Resources
Counterpoint: Vancomycin and Staphylococcus aureus--an antibiotic enters obsolescence
Performance Analysis of Dynamic Finite Versioning Schemes: Storage Cost vs. Obsolescence
Retreat from Doomsday: The Obsolescence of Major War. By John Mueller. (New York: Basic, 1989. viii + 327 pp. $20.95.) and War: Ends...
Firm Strategy and Age Dependence: A Contingent View of the Liabilities of Newness, Adolescence, and Obsolescence