(mythology) The oldest and best of the Classical Ages of Man, when people lived innocent lives of happiness and prosperity.

The current era, characterised by the increasing importance and availability of information (especially by means of computers), as opposed to previous eras (such as the Industrial Age) in which most endeavours related to some physical process or product.

One who is the same age as another.

(US, slang, dated) A very long time.

(historical) A period in the 1920s and 1930s in which jazz music and dance styles rapidly gained nationwide popularity in the United States.

plural of radiometric age

(archaeology, paleontology, geology, geochronology) The age of a material as determined by radiometric dating.

(psychology) The age category such as "child", "young adult", "old person", etc. that is part of a person's self-identity.

plural of age identity

(demography) The age that divides a population (of a country etc.) into two numerically equivalent groups.