An age of the world, a secular period. Obsolete.

A particular period in history, or in the existence of the world, the universe, etc.; an era, an epoch, an age.

An age or extended period of time in human (or earthly) existence or history; (in plural) ages. See also phrases 10, phrases 9b, and phrases 22. Obs…

An age of the world. Obsolete.

Usually with possessive or of. The period which is contemporary with the life, rule, activity… In plural.

In early use, a chronological period dated from an ‘epoch’ in sense 1. In later use, a period of history defined by the prevalence of some…

A historical period; a portion of historical time marked by the continuance throughout it of particular influences, social conditions, etc. Cf. epoch…

Of life, time, etc.: The gliding or passing away, passage; a period or interval elapsed.

Geology. With modifying word or postmodifying of-phrase: a period of geological time in which particular kinds of organism flourished, as…

A chief epoch or era, serving to date from (Greek κανὼν χρονικός); a basis for chronology. Cf. canon monument n. at compounds 1.

A vast period of time; an age or cycle of the universe, esp. in Jewish and Christian theology.