Semidiurnal tide
Tide with two high and two low waters in a tidal day, each high and each low approximately equal in stage. (US Army Corps of Engineers, Low Cost Shore Protection: A Property Owner's Guide, 2004)
Tide with two high and two low waters in a tidal day, each high and each low approximately equal in stage. (US Army Corps of Engineers, Low Cost Shore Protection: A Property Owner's Guide, 2004)