aging
noun [ U ]
ACCOUNTING uk/ˈeɪdʒɪŋ/ usa way of organizing a company's accounts to show the length of time its customers have owed the company money:
Financial analysts often use aging to assess a company’s risk from overdue debtors.
aging
adjective
(also mainly UK ageing) uk/ˈeɪdʒɪŋ/ usbecoming older, and not as modern or powerful as before:
an aging market/customer/population
The agency is showing all the signs of an ageing company whose growth is too dependent on buying market size.