Tide'-dāy, n.

(109), n. The interval between the occurrences of two consecutive maxima of the resultant wave at the same place.

☞ Its length varies as the components of sun and moon waves approach to, or recede from, one another. A retardation from this cause is called the lagging of the tides, while the acceleration of the recurrence of high water is termed the priming of the tide.