Definitions for "SEMIDIURNAL TIDE"
Keywords:  tidal, tide, lunar, inequalities, hrs
TIDES occurring twice daily. There are two high and two lows per TIDAL DAY. See Figure 12.
a tidal cycle where there are two high tides and two low tides in one lunar day (lunar day = 24 hours, 50 minutes).
The type of tide having two high water s and two low water s each tidal day with small inequalities between successive high and successive low water heights and durations.