| watergate | compuerta |
| Watergate scandal | Escándalo Watergate |
| waterhole | aguaje |
| Waterhouse-Friderichsen syndrome | Síndrome de Waterhouse-Friderichsen |
| watering can | regadera |
| watering hole | bar |
| watering place | bar |
| waterless | sin |
| waterline | línea de flotación |
| waterlogged | saturado de agua |
| Waterloo | Waterloo |
| Waterloo station | Waterloo |
| Watermael-Boitsfort | Watermael-Boitsfort |
| watermark | filigrana |
| watermelon | patilla |
| watermill | molino de agua |
| Waterpark | Parque acuático |
| Waterpolo | Waterpolo |
| waterproof | impermeable |
| Waterproofsness | Índice de protección |
| waters | aguas |
| watershed | divisoria |
| waterside | ribera |
| Watersides | Banco |
| waterskiing | esquí acuático |
| waterspout | tromba marina |
| watertight | impermeable |
| watertightness | estanquidad |
| Waterton-Glacier International Peace Park | Waterton-Glacier International Peace Park |
| waterway | vía navegable |
| waterwheel | rueda hidráulica |
| waterworks | sistema de agua potable |
| Waterworld | Waterworld |
| watery | pálido |
| Watford | Watford |
| Watford tube station | Watford |
| Watkins Glen International | Watkins Glen International |
| Watling Street | Watling Street |
| watt | vatio |
| Watt of Sussex | Vatio |
| Watt-hour | Kilovatio-hora |
| wattage | potencia en vatios |
| Watten | Vatio |
| Wattenwil | Wattenwil |
| Wattled Curassow | Crax globulosa |
| Wattled Guan | Aburria aburri |
| Wattled Jacana | Jacana jacana |
| wattmeter | vatímetro |
| Watto | Watto |
| watts | vatio |
| Watts Bar Nuclear Generating Station | Planta de energía nuclear Watts Bar |
| WAV | WAV |
| wave | señal |
| wave band | banda de ondas |
| Wave energy | Energía undimotriz |
| Wave function collapse | Colapso de la función de onda |
