| A | B |
| hydr | Greek-Water |
| aqua/aqu | Latin-Water |
| mar/mer | Latin-Sea |
| dehydrate | to lose water or moisture; 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 from a main pipe, especially for fighting fires |
| aquatic | living or taking place in water |
| aqueduct | a 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 |
| vis/vid | see, look |
| aud | hear |
| phon | sound |
| visualize | form a mental image of something; imagine |
| vista | a pleasing view, especially one seen through a long, narrow opening |
| visionary | a person with original ideas about what the future will or could be like |
| audible | able to be heard |
| audition | an interview for a particular role or job as a singer, actor, dancer, or musician, consisting of a performance |
| audience | a group of people who have gathered to watch a performance or public event |
| auditorium | the part of a theater, concert hall, or other public building in which the audience sits |
| cacophony | mixture of various unpleasant sounds; harsh sounds |
| xylophone | a musical instrument played by striking a row of metal bars of different lengths with one or more small wooden or plastic mallets |
| phonograph | a machine that reproduces sound (music) by placing a needle in contact with a grooved rotating disk; a record player |