高年齢化 こうねんれいか Meanings Noun, する verb, Intransitive ageing (of a population); aging See also: 高齢化 (こうれいか). Kanji 高 high. Read as コウ. 年 year. Read as ネン. 齢 age. Read as レイ. 化 transform. Read as カ. Jinuma: Japanese Dictionary · Word lists