| A | B |
| Dehydrate | to lose water or moisture; to become dry |
| Hydroelectric | related to electricity that is made from the energy of falling water |
| Hydrant | an upright pipe with a spout, nozzle, or other outlet, usually in the street for drawing water |
| Aquatic | living or taking place in water |
| Aqueduct | channel that has been built to carry water over long distances |
| Aquarium | a glass tank or bowl in which fish or other aquatic animals live |
| Aquifer | an underground layer of rock that water continually moves through |
| Marine | related to the sea; existing in or produced by the sea |
| Marina | a small harbor where small boats can dock |
| Maritime | on or near the sea |