22-letter words containing d, i, s, a
- white-tailed sea eagle — a grayish-brown sea eagle, Haliaetus albicilla, of the Old World and Greenland, having a white tail.
- white-throated sparrow — a common North American finch, Zonotrichia albicollis, having a white patch on the throat and a black and white striped crown.
- whitworth screw thread — a thread form and system of standard sizes, proposed by Whitworth in 1841 and adopted as standard in the U.K., having a flank angle of 55° and a rounded top and foot
- wi-fi protected access — (networking, security) (WPA) A security scheme for wireless networks, developed by the networking industry in response to the shortcomings of Wired Equivalent Privacy (WEP). WPA uses Temporal Key Integrity Protocol (TKIP) encryption and provides built-in authentication, giving security comparable to VPN tunneling with WEP, with the benefit of easier administration and use.
- william lloyd garrison — William Lloyd, 1805–79, U.S. leader in the abolition movement.
- windsor and maidenhead — (since 1917) a member of the present British royal family. Compare Saxe-Coburg-Gotha (def 1).
- world communion sunday — the first Sunday in October, during which members of ecumenical churches throughout the world celebrate Holy Communion, especially to affirm their unity in Christ.
- yellow-shafted flicker — a North American woodpecker C. auratus, which has a yellow undersurface to the wings and tail
- ysbaddaden chief-giant — the father of Olwen.
- zodiacal constellation — any of the 12 constellations after which the signs of the zodiac are named: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, or Pisces