23-letter words containing p, i, l, o, n, d
- real simple syndication — (spelling) Illiterate form of Really Simple Syndication.
- refinery waste disposal — Refinery waste disposal is the system for dealing with waste materials, especially hazardous ones, in a refinery.
- somaliland protectorate — official name of the former British Somaliland.
- specialite de la maison — the specialty of the house (used in referring to the most important dish served by a restaurant).
- st. pierre and miquelon — two small groups of islands off the S coast of Newfoundland: an overseas territory of France; important base for fishing. 3 sq. mi. (240 sq. km). Capital: St. Pierre.
- sustainable development — supporting economy via renewable resources
- turn-and-slip indicator — bank-and-turn indicator.
- 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
- wind cave national park — a national park in SW South Dakota. 41½ sq. mi. (107 sq. km).