1. Noun, Noun which may take the genitive case particle 'no'

   1.

   middle-age; middle age; midlife; one's middle years

2. Wikipedia definition

   2.

   Middle age

Example sentences

• 彼女は中年の都会派プロフェッショナルでした。

  She was a middle-aged urban professional.

• 最近、お腹の周りに肉がついてきたみたい。中年太りかな。

  I'm getting a spare tire around my waist. I guess it's middle age creeping up on me.