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Zinc-Air Cell: A recently developed type of primary cell which has a very high energy density, but a relatively short working life. It uses a negative electrode of powdered zinc mixed with potassium hydroxide and a negative electrode of moist air.



Zinc Chloride Battery: An enhanced version of the standard zinc-carbon primary battery, with about 50% higher capacity. The main difference is the use of zinc chloride as the electron.



Zone circuit A zone is an area to be watered by the sprinklers connected to one valve.



Zamboni: An ice resurfacer is a vehicle used to clean and smooth the surface of an ice sheet, usually in an ice rink. The first ice resurfacer was developed by Frank Zamboni in 1949 in the city of Paramount, California. Zamboni / is a federally and internationally registered trademark.