17-letter words containing d, p, e
- radio-transparent — transparent to radiation; invisible in x-ray photographs and under fluoroscopy (opposed to radiopaque).
- radiometeorograph — a device for the automatic transmission by radio of the data from a set of meteorological instruments
- 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.
- refractory period — a short period after a nerve or muscle cell fires during which the cell cannot respond to additional stimulation.
- 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'.
- reproductive cell — gamete.
- reverse apartheid — a perceived bias against White people following the end of Apartheid
- 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)
- rodolphe kreutzer — Rodolphe [raw-dawlf] /rɔˈdɔlf/ (Show IPA), 1766–1831, French violinist.
- 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
- russell's paradox — a paradox of set theory in which an object is defined in terms of a class of objects that contains the object being defined, resulting in a logical contradiction.
- sable island pony — a variety of wild pony found on Sable Island, Nova Scotia
- sacrifice paddock — a grassed area allowed to be grazed completely, to be cultivated and resown later
- san pedro channel — a strait between the mainland of SW California and Santa Catalina Island. About 20 miles (32 km) wide.
- schmidt telescope — a wide-angle reflecting telescope used primarily for astronomical photography, in which spherical aberration and coma are reduced to a minimum by means of a spherical mirror with a corrector plate near its focus.
- schwedler's maple — a variety of the Norway maple, Acer platanoides schwedleri, producing red leaves that subsequently turn green.
- 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.
- semisophisticated — somewhat sophisticated.
- serendipity berry — miracle fruit (def 2).
- set on a pedestal — an architectural support for a column, statue, vase, or the like.
- sexual dimorphism — the condition in which the males and females in a species are morphologically different, as with many birds.
- 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.
- shutter-preferred — of or relating to a semiautomatic exposure system in which the photographer presets the shutter speed and the camera selects the aperture.
- shuttle diplomacy — diplomatic negotiations carried out by a mediator who travels back and forth between the negotiating parties.
- sidewall sampling — Sidewall sampling is the process of taking a sample from the wall of the borehole.
- six-speed gearbox — a gearbox containing a system of six gears
- 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.
- sodium pyroborate — borax1 .
- 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.
- specific humidity — the ratio of the mass of water vapor in air to the total mass of the mixture of air and water vapor.
- spectroradiometer — an instrument for determining the radiant-energy distribution in a spectrum, combining the functions of a spectroscope with those of a radiometer.
- spectrum disorder — any of a group of disorders each having symptoms that occur on a continuum and certain features that are shared along its spectrum but that manifest in markedly different forms and degrees. See also autism spectrum disorder.
- speech difficulty — a problem encountered in speaking
- 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