| watermill | mulino ad acqua |
| Waterpolo | Pallanuoto |
| waterproof | impermeabile |
| waterproofed | impermeabilizzato |
| waterproofing | impermeabilizzazione |
| Waterproofsness | International protection |
| watershed | spartiacque |
| Watershed divide | Displuvio |
| waterside | fiume |
| Watersides | Banca |
| waterskiing | sci nautico |
| waterspout | tromba marina |
| watertight | di ferro |
| watertightness | impermeabilità |
| Waterton Lakes National Park | Waterton Lakes National Park |
| Waterton-Glacier International Peace Park | Parco internazionale della pace Waterton-Glacier |
| Waterville | Waterville |
| waterway | via d'acqua |
| waterwheel | ruota idraulica |
| waterworks | acquedotto |
| Waterworld | Waterworld |
| watery | pallido |
| Watford | Watford |
| Watford tube station | Watford |
| Watkins Glen | Watkins Glen |
| Watkins Glen International | Watkins Glen International |
| Watson | Watson |
| Watsonville | Watsonville |
| watt | watt |
| Watt of Sussex | Watt |
| Watt-hour | Wattora |
| wattage | potenza in watt |
| Watten | Watt |
| Wattenberg | Wattenberg |
| Wattendorf | Wattendorf |
| Wattens | Wattens |
| Wattenwil | Wattenwil |
| Wattie Buchan | Wattie Buchan |
| wattle | ostacolo |
| Wattled Jacana | Jacana jacana |
| wattmeter | wattmetro |
| Watto | Watto |
| Wattrelos | Wattrelos |
| watts | bassofondo |
| Wattwil | Wattwil |
| Wauwil | Wauwil |
| WAV | WAV |
| wave | segno |
| wave about | brandire |
| wave band | banda di frequenza |
| Wave energy | Energia del moto ondoso |
| Wave propagation | Propagazione delle onde |
| Wave the cape at | Cappeggiare |
| wave to | accennare |
| wave-particle duality | dualismo onda-particella |
| wavefunction | funzione d'onda |
| wavelength | lunghezza d'onda |
| Wavelength dispersive X-ray spectroscopy | Spettrofotometria XRF |
| Wavelength-division multiplexing | Wavelength Division Multiplexing |
| Wavelet compression | Wavelet |
| wavelike | ondulato |
| Wavellite | Wavellite |
| wavemeter | ondametro |
| wavenumber | numero d'onda |
| waver | tremolare |
| waver between two things | essere combattuto tra due cose |
| wavered | oscillai |
| waverer | chi è vacillante |
| wavering | vacillante |
| waveringly | oscillando |
| wavers | oscilla |
| Waville | Waville |
| wavily | ondulato |
| waving | agitato |
