The term tidal wave can refer to:
- A tidal bore, a large movement of water formed by the funneling of the incoming tide into a river or narrow bay
- A rogue wave of up to 100 feet high, often in the middle of the ocean and against prevailing current and wave direction
- The crest (physics) of a tide as it moves around the Earth.
- Tsunami are often referred to popularly as tidal waves, although this usage is discouraged by geologists and oceanographers.
Other uses include:
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