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a plane figure with the shape of half a circle


an airplane that can land on or take off from water


related to electricity made from the energy of falling water


occurring twice a month


having some official authority or sanction


one of the two competitions in the next to the last round of an elimination tournament


Requiring good clothes rather than play clothes


the science that studies fluids in motion


the internal and external use of water in the treatment of disease


aerobic exercises performed in water, as in a swimming pool.

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