tidal

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adjective tid·al \ˈtī-d^əl\

: of or relating to tides : rising and falling at regular times

Full Definition of TIDAL

1

a :  of, relating to, caused by, or having tides <tidal cycles> <tidal erosion>

b :  periodically rising and falling or flowing and ebbing <tidal waters>

2

:  dependent (as to the time of arrival or departure) upon the state of the tide <a tidal steamer>

— tid·al·ly \-d^əl-ē\ adverb

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First Known Use of TIDAL

1807

Rhymes with TIDAL

bridal, bridle, idle, idol, idyll, seidel, sidle

tidal

adjective tid·al \ˈtīd-^əl\   (Medical Dictionary)

Medical Definition of TIDAL

:  of, relating to, or constituting tidal air <interference with the normal tidal exchange of the lungs—F. R. Mautz & R. M. Hosler>