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Webster Dictionary (0.00 / 0 votes) Rate this definition: Amphi- a prefix in words of Greek origin, signifying both, of both kinds, on both sides, about, around
The term amphidromic point derives from the Greek words amphi (around) and dromos (running), referring to the rotary tides running around them. The M 2 tidal constituent, the amplitude indicated by color. The white lines are cotidal lines spaced at phase intervals of 30Â° (a bit over 1 hr).