Of or pertaining to tides; caused by tides; having tides; periodically rising and falling, or following and ebbing; as, tidal waters. The tidal wave of deeper souls Into our inmost being rolls, And lifts us unawares Out of all meaner cares.
(Science: physiology) (Longfellow) Tidal air, the air which passes in and out of the lungs in ordinary breathing. It varies from twenty to thirty cubic inches. Tidal basin, a dock that is filled at the rising of the tide. Tidal wave. See Tide wave, under Tide. Cf. 4th bore. A vast, swift wave caused by an earthquake or some extraordinary combination of natural causes. It rises far above high-water mark and is often very destructive upon low-lying coasts.