middle age noun
[noncount] : the period in a person's life from about age 40 to about age 60
▪ as our generation approaches middle age ▪ The patient was in late middle age. ▪ He feared the approach of middle age.
▪ as our generation approaches middle age ▪ The patient was in late middle age. ▪ He feared the approach of middle age.
— mid·dle–aged 
/ˌmɪdl̟ˈeɪʤd/ adjective
▪ health problems common in middle-aged men and women ▪ a book loved by the young, the old, and the middle-aged [=middle-aged people]
/ˌmɪdl̟ˈeɪʤd/ adjective ▪ health problems common in middle-aged men and women ▪ a book loved by the young, the old, and the middle-aged [=middle-aged people]
