17-letter words containing n, d, p
- redemption center — a commercial establishment at which trading stamps of a specific brand may be exchanged for merchandise.
- reformed spelling — a revised orthography intended to simplify the spelling of English words, especially to eliminate unpronounced letters, as by substituting thru for through, tho for though, slo for slow, etc.
- repeating decimal — a decimal numeral that, after a certain point, consists of a group of one or more digits repeated ad infinitum, as 2.33333 …. or 23.0218181818 ….
- reported question — A reported question is a question which is reported using a clause beginning with a word such as 'why' or 'whether', as in 'I asked her why she'd done it'.
- rhodope mountains — a mountain range in SE Europe, in the Balkan Peninsula extending along the border between Bulgaria and Greece. Highest peak: Golyam Perelik (Bulgaria), 2191 m (7188 ft)
- round-trip ticket — a ticket entitling a passenger to travel to his or her destination and back again
- rural development — social or economic activities or initiatives designed to improve the standard of living in areas far away from large towns or cities
- sable island pony — a variety of wild pony found on Sable Island, Nova Scotia
- san pedro channel — a strait between the mainland of SW California and Santa Catalina Island. About 20 miles (32 km) wide.
- sandwich compound — any of a class of organometallic compounds whose molecules have a metal atom or ion bound between two plane parallel organic rings
- school playground — school's outdoor recreation area
- secondary process — the conscious mental activity and logical thinking controlled by the ego and influenced by environmental demands.
- secondary product — a product that is not the main product of an industry; a by-product
- self-depreciating — self-deprecating.
- self-reproduction — the act or process of reproducing.
- serendipity berry — miracle fruit (def 2).
- set on a pedestal — an architectural support for a column, statue, vase, or the like.
- shepherd's needle — a European umbelliferous plant, Scandix pectenveneris, with long needle-like fruits
- shetland pullover — a thick woollen sweater made from Shetland wool
- shetland sheepdog — one of a breed of small sheepdogs resembling a miniature collie, raised originally in the Shetland Islands.
- shipping industry — the industry concerned with transporting freight, esp by ship
- shopping bag lady — bag lady (def 1).
- shopping-bag lady — bag lady (def 1).
- sidewall sampling — Sidewall sampling is the process of taking a sample from the wall of the borehole.
- sleep deprivation — a condition in which you have not had enough sleep
- sliding vane pump — A sliding vane pump is a pump in which the vanes (=flat parts) are the main sealing element between the suction and discharge areas.
- sodium propionate — a transparent, crystalline, water-soluble powder, C 3 H 5 NaO 2 , used in foodstuffs to prevent mold growth, and in medicine as a fungicide.
- sound spectrogram — a graphic representation, produced by a sound spectrograph, of the frequency, intensity, duration, and variation with time of the resonance of a sound or series of sounds.
- southern sporades — a group of Greek islands in the Aegean, including the Dodecanese, lying off the SW coast of Turkey
- special education — education that is modified or particularized for those with singular needs, as disabled or maladjusted people, slow learners, or gifted children.
- speech impediment — speaking disorder
- speed restriction — the maximum speed allowed for road vehicles, trains, or other vehicles
- spiny-headed worm — any of a small group of endoparasites of the phylum Acanthocephala, as larvae parasitic in insects and crustaceans and as adults in various vertebrates.
- spitting distance — a short space or distance
- split keyboarding — the act or practice of editing data from one terminal on another terminal
- split one's sides — to laugh very heartily
- spondylolisthesis — the forward displacement of a vertebra.
- spotted sandpiper — a North American sandpiper, Actitis macularia, that has brownish-gray upper parts and white underparts, and is spotted with black in the summer.
- spread your wings — if you spread your wings, you do something new and rather difficult or move to a new place, because you feel more confident in your abilities than you used to and you want to gain wider experience
- springfield rifle — a single-shot, breechloading .45-caliber rifle used by the U.S. Army from 1867 to 1893.
- st. crispin's day — October 25: anniversary of the Battle of Agincourt (1415).
- stand-up comedian — performer: tells jokes
- standing expenses — fixed or flat expenses or charges
- stars and stripes — US national flag
- stymphalian birds — a flock of predacious birds of Arcadia that were driven away and killed by Hercules as one of his labors.
- sunday supplement — a special section incorporated in the Sunday editions of many newspapers, often containing features on books, celebrities, home entertainment, gardening, and the like.
- superaerodynamics — the branch of aerodynamics that deals with gases at very low densities.
- superconductivity — the phenomenon of almost perfect conductivity shown by certain substances at temperatures approaching absolute zero. The recent discovery of materials that are superconductive at temperatures hundreds of degrees above absolute zero raises the possibility of revolutionary developments in the production and transmission of electrical energy.
- supervision order — an order by a juvenile court requiring a named probation officer or local-authority social worker to advise, assist, and befriend a child or young person who is the subject of care proceedings, over a period of up to three years
- supply and demand — economy: basic market theory