cotidal

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co·tid·al

C0676000 (kō-tīd′l)adj.1. Indicating coincidence of high tides or low tides.2. Of or relating to a line that passes through each location on a coastal map where tides occur at the same time of day.

cotidal

(kəʊˈtaɪdəl) adj (Navigation) (of a line on a tidal chart) joining points at which high tide occurs simultaneously

co•tid•al

(koʊˈtaɪd l)

adj. 1. pertaining to a coincidence of tides. 2. (on a chart or map) indicating a line connecting points at which high tide occurs at the same time. [1825–35]