tidal

adjective tid·al \ ˈtī-dᵊl \
|Updated on: 9 Jul 2018

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

tidally

play \ˈtī-dᵊl-ē\ adverb

Recent Examples of tidal from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tidal.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of tidal

1807

in the meaning defined at sense 1a

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TIDAL Defined for English Language Learners

tidal

Definition of tidal for English Language Learners

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


TIDAL Defined for Kids

tidal

adjective tid·al \ ˈtī-dᵊl \

Definition of tidal for Students

: of or relating to tides : flowing and ebbing like tides

Medical Dictionary

tidal

adjective tid·al \ ˈtīd-ᵊl \

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


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