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17-letter words containing p, e, d, i

  • radial (ply) tire — a motor vehicle tire having a foundation of plies of rubberized cords running at right angles to the center line of the tread: it provides better handling, etc. than a bias ply tire
  • radiation pattern — the graphic representation of the strength and direction of electromagnetic radiation in the vicinity of a transmitting aerial
  • radiation therapy — x-rays used as treatment
  • radiative capture — the capture of a particle, as a neutron, by a nucleus, inducing the emission of electromagnetic radiation, as a gamma ray.
  • radio in the loop — Wireless Local Loop
  • 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)
  • round-trip ticket — a ticket entitling a passenger to travel to his or her destination and back again
  • 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
  • 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.
  • self-depreciating — self-deprecating.
  • self-reproduction — the act or process of reproducing.
  • semisophisticated — somewhat sophisticated.
  • serendipity berry — miracle fruit (def 2).
  • sexual dimorphism — the condition in which the males and females in a species are morphologically different, as with many birds.
  • 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 .
  • 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
  • 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.
  • spruce gall aphid — any of various homopterous insects of the family Adelgidae, as Adelges abietis (spruce gall aphid) and Pineus pinifoliae (pine leaf aphid) that feed and form galls on conifers.
  • stand-up comedian — performer: tells jokes
  • standing expenses — fixed or flat expenses or charges
  • stars and stripes — US national flag
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