The chronological age of individuals of the same maturity as the person in question.

The period from the about the time of the launch of Sputnik in 1957 to the present day, during which people ventured into space. / (attributive) Redolent of the space age; appearing futuristic or modern.

Alternative letter-case form of space age

(idiomatic) A time period of years or more.

Synonym of prehistory: the era before written records.

Being of an age during which attendance at school is customary.

plural of prehistoric age

A therapy or process which reverses the physiological aging process.

Used other than figuratively or idiomatically: The least age at which one is permitted by law to drink alcoholic beverages. / (poker slang) A two and an ace as a starting hand in Texas hold 'em

plural of age of majority