高こう年ねん齢れい化か

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

• この地ち域いきでは高こう年ねん齢れい化かが急きゅう速そくに進すすんでいる。

  In this region, the aging of the population is progressing rapidly.

• 高こう年ねん齢れい化か社しゃ会かいに対たい応おうした政せい策さくが必ひつ要ようだ。

  Policies adapted to an aging society are necessary.