senescence
/sɛnɪˈsɛns/; /sɛˈnɛsɛns/Definitions
1. noun
The state or process of growing old or deteriorating, especially in plants, but also applicable to living organisms or systems.
“The forest was experiencing senescence due to the prolonged drought.”
2. noun
The process of becoming less effective or productive, especially in a business or social context.
“The company went into senescence after its founder retired.”