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on the cusp

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on the cusp (of something)

Fig. at the point in time that marks the beginning of something. The transistor was on the cusp of a new age in electronics.

See also: on

on the cusp

1. On the threshold or verge of a development or action: an actor on the cusp of becoming a star.

2. At the dividing line or border of two conditions or categories: an artist on the cusp between Victorianism and modernism.

See also: on