Meaning of amphidromic point

am'phi•drom'ic point'

Pronunciation: (am'fi-drom'ik, am"-), [key]
— Oceanog. Oceanog.
  1. 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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.