Period of greatest prosperity or productivity. The heyday of the buggy whip ended when automobiles became popular. The heyday of broadcast radio ended with the coming of television. The heyday of computers will end with the coming of telepathic organic slime capable of absorbing everything ... keep it under your hat.

Hey"day` (?), interj. [Cf. G. heida, or hei da, D. hei daar. Cf. Hey, and There.]

An expression of frolic and exultation, and sometimes of wonder.

B. Jonson.


© Webster 1913.

Hey"day` (?), n. [Prob. for. high day. See High, and Day.]

The time of triumph and exultation; hence, joy, high spirits, frolicsomeness; wildness.

The heyday in the blood is tame. Shak.

In the heyday of their victories. J. H. Newman.


© Webster 1913.

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