tidal
adj.adj. connected to the regular rise and fall of the ocean. You use this to describe things that change or move because of the sea's natural rhythm.
adj. relating to, caused by, or having tides. Describes phenomena influenced by the periodic rise and fall of sea levels resulting from gravitational forces.
The tidal waves crash against the shore every morning.
The small island is only accessible by foot during low tide because of the dangerous tidal currents.
Ecologists are studying how the tidal fluctuations in the estuary affect the breeding patterns of local bird species that rely on the exposed mudflats for food.
From tide + -al. Probably a hybrid formation within English. Alternatively it might be from an unattested British Medieval Latin *tīdālis, derived from rare tīda, from Old English tīd. The usual Latin word for “tidal” is aestuālis.
Typically precedes the noun it modifies; often used in technical or geographical contexts.