1) Low-range sea change 2) Ocean occurrence 3) Oceanic phenomenon 4) One concern of a skipper 5) Sea current 6) Seasonal low water 7) Semimonthly ocean occurrence 8) Semimonthly ocean phenomenon 9) Semimonthly phenomenon 10) Shore phenomenon 11) Sort of sea current 12) Twice monthly ocean event 
tide of minimal range occurring near the time when the Moon and the Sun are in quadrature. This condition is geometrically defined as the time at ... [2 related articles]
The tide with the least variation in the range water levels.
A tide of decreased amplitude, occurring semimonthly one or two days after quadrature . 
when the tide range is the least - rising less and dropping less than the other tides during the four week cycle 
A daily tidal range of minimal amplitude that occurs when the moon and sun are positioned at 90 degrA tide cycle of unusually small amplitude, which occurs twice monthly when the lunar and solar tides
a time at which the tidal range is at its smallest
the tide with the least difference or movement, between the high and low water, happens during the first and last quarter of the moon
When the Moon is at its First Quarter or Last Quarter, its forces are partially cancelled out by the Sun. This leads to a lower high tide than normal.
Tide that occurs every 14 to 15 days and coincides with the first and last quarter of the moon. This tide has a small tidal range because the gravitational forces of the moon and Sun are perpendicular to each other. Contrasts with spring tide.
A neap tide is either of the two tides that occur at the first or last quarter of the moon when the tide-generating forces of the sun and moon oppose each other and produce the smallest rise and fall in tidal level.
A tide cycle of unusually small amplitude, which occurs twice monthly when the lunar and solar tides are opposed-that is, when the gravitational pull of the Sun is at right angles to that of the Moon.
[n] - a less than average tide occurring at the first and third quarters of the moon
Tide of decreased range occurring semimonthly as the result of the moon being in quadrature. The NEAP RANGE of the tide is the average semidiurnal range occurring at the time of neap tides and is most conveniently computed from the harmonic constants. The NEAP RANGE is typically 10 to 30 percent smaller than the mean range where the type of tide is...
neap noun a less than average tide occurring at the first and third quarters of the moon