amphidromic point

American

[am-fi-drom-ik, am-] / ˈæm fɪˈdrɒm ɪk, ˌæm- /

noun

Oceanography.

a point of almost zero tidal fluctuation on the ocean surface, represented on a chart of cotidal lines by a point from which these lines radiate.

1935–40; < Greek amphídrom ( os ) running both ways + -ic; see amphi-, -drome

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Near an amphidromic point, the tide moves in a big circle.

From Scientific American • Apr. 19, 2023

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023