The quality of being periodical or of occurring periodically; frequency.

In wider senses of Greek εὐρυθμία. Rhythmical order or movement.

gen. Regularity in the repetition in time or space of an action, process, feature, condition, event, etc.; periodic or cyclical change or movement…

Chiefly Science. The quality or character of being periodic; the quality of regular recurrence; tendency to recur at (esp. regular) intervals.

The state or quality of being regular (in various senses); an example or instance of this.

The condition of being dependent on the seasons or other temporal cycle; the state of recurring at regular intervals.

The property of being recursive; = recursivity, n.

The property of being recursive; = recursiveness, n.