Science / Tides and Currents / ZO: Symbol recommended by the International Hydrographic Organization to represent the elevation of mean sea level above chart datum.

Zone Blitz

Entertainment / Football / Zone Blitz: A defensive package combining a blitz with zone pass coverage. Allows the defense to choose the blitzer after the offense shows formation and pass coverage requirements, and features unpredictable bli MORE

Intertidal Zone

Science / Tides and Currents / Intertidal Zone: (technical definition) The zone between the mean higher high water and mean lower low water lines. MORE

Horizontal Pressure Gradient Force

Science / Tides and Currents / Horizontal Pressure Gradient Force: The horizontal component of the product of the specific volume and the rate of decrease in pressure with distance. MORE

Original Horizontality

Science / Geology / Original Horizontality: One of the principles of relative dating. Based upon the good assumption that sedimentary rocks are deposited in horizontal or nearly horizontal layers: then if sedimentary layers are found in an incl MORE

Littoral Zone

Science / Tides and Currents / Littoral Zone: In coastal engineering, the area from the shoreline to just beyond the breaker zone. In biological oceanography, it is that part of the benthic division extending from the high water line out to a dep MORE

Zone Defense

Entertainment / Basketball / Zone Defense: A defense used extensively in college but not permitted in the NBA, where each defender is responsible for an area of the court and must guard any player who enters that area. MORE