noun, noun or participle which takes 'suru', intransitive verb
aging of a population; demographic aging
Refers to the process of a population's average age increasing, often used in social and economic contexts. The cross-reference to 高齢化 suggests it may be a less common or more formal variant.
See also: 高齢化
この地域では高年齢化が急速に進んでいる。
In this region, the aging of the population is progressing rapidly.
高年齢化社会に対応した政策が必要だ。
Policies adapted to an aging society are necessary.