23-letter words containing p, o, v
- volumetric displacement — the volume of air per revolution that passes through a mechanical pump when the pressure at the intake and the exhaust is the same as that of the atmosphere
- voyageurs national park — a national park in N Minnesota. 343 sq. mi. (888 sq. km).
- wind cave national park — a national park in SW South Dakota. 41½ sq. mi. (107 sq. km).