Akademik

middle age
noun
the time of life between youth and old age (e.g., between 40 and 60 years of age)
Hypernyms: ↑time of life
Part Holonyms: ↑adulthood, ↑maturity
Part Meronyms: ↑menopause, ↑climacteric, ↑change of life

Useful english dictionary. 2012.