28-letter words containing p, t, i, l, o
- united states postal service — an independent federal agency created in 1971 to replace the Post Office Department as the division of the federal government responsible for postal services. Abbreviation: USPS.
- virgin islands national park — a national park on St. John Island, Virgin Islands: prehistoric Indian relics. 24 sq. mi. (62 sq. km).
- waterton lakes national park — a national park in W Canada, in S Alberta. 220 sq. mi. (570 sq. km).
- wireless encryption protocol — Wired Equivalent Privacy