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15-letter words containing i, s, o, p, d

  • scolopendriform — resembling scolopendra
  • scorpion spider — whipscorpion.
  • seaside sparrow — a species of sparrow, Ammospiza maritima, existing in two subspecies, one (Cape Sable seaside sparrow) having dark olive-drab plumage with a lighter breast and underbelly, and the other (dusky seaside sparrow) having bold black and white markings on the breast and underbelly: the dusky seaside sparrow is almost extinct.
  • second position — a position in which the feet are spread apart and are at right angles to the direction of the body, the toes pointing out.
  • second republic — the republic established in France in 1848 and replaced by the Second Empire in 1852.
  • seidlitz powder — a laxative consisting of two powders, tartaric acid and a mixture of sodium bicarbonate and Rochelle salt (sodium potassium tartrate)
  • self-hypnotized — hypnotized by oneself.
  • self-proclaimed — to announce or declare in an official or formal manner: to proclaim war.
  • self-production — produced by oneself or itself.
  • septendecillion — a cardinal number represented in the U.S. by 1 followed by 54 zeros, and in Great Britain by 1 followed by 102 zeros.
  • serendipitously — come upon or found by accident; fortuitous: serendipitous scientific discoveries.
  • sewage disposal — waste processing
  • shopping arcade — a place where a number of shops are connected together under one roof
  • sidereal period — the period of revolution of a body about another with respect to one or more distant stars
  • simple division — a type of division to find out how many times the smaller number is contained in the larger one
  • slide projector — device for showing slides
  • sneezing powder — a powder used to make people sneeze as a practical joke
  • snubfin dolphin — Australian dolphin with a small dorsal fin
  • social spending — the money that is spent on welfare payments
  • sodium peroxide — a yellowish-white, hygroscopic, water-soluble powder, Na 2 O 2 , used chiefly as a bleaching agent and as an oxidizing agent.
  • sodium sulphate — a solid white substance that occurs naturally as thenardite and is usually used as the white anhydrous compound (salt cake) or the white crystalline decahydrate (Glauber's salt) in making glass, detergents, and pulp. Formula: Na2SO4
  • sophisticatedly — (of a person, ideas, tastes, manners, etc.) altered by education, experience, etc., so as to be worldly-wise; not naive: a sophisticated young socialite; the sophisticated eye of an experienced journalist.
  • spawning ground — a place where fish deposit their eggs for fertilization
  • special edition — newspaper, magazine: extra issue
  • speech disorder — an inability to produce normal speech
  • speed indicator — an instrument for counting the number of revolutions of a gasoline engine.
  • sphaerosiderite — a type of siderite
  • spheroidization — the conversion of grains into spheroids
  • spit and polish — great care in maintaining smart appearance and crisp efficiency: The commander was concerned more with spit and polish than with the company's morale.
  • sports medicine — a field of medicine concerned with the functioning of the human body during physical activity and with the prevention and treatment of athletic injuries.
  • spotted sunfish — a sunfish, Lepomis punctatus, inhabiting streams from South Carolina to Florida, having the body marked with longitudinal rows of spots.
  • stamping ground — a habitual or favorite haunt.
  • stilpnosiderite — a resinous variety of limonite with a black-brown colour
  • stomping ground — a habitual or favorite haunt.
  • studio portrait — a photograph of a person taken in a studio
  • styloid process — a long, spinelike process of a bone, especially the projection from the base of the temporal bone.
  • sulphur dioxide — a colourless soluble pungent gas produced by burning sulphur. It is both an oxidizing and a reducing agent and is used in the manufacture of sulphuric acid, the preservation of a wide range of foodstuffs (E220), bleaching, and disinfecting. Formula: SO2
  • sulphurous acid — an unstable acid produced when sulphur dioxide dissolves in water: used as a preservative for food and a bleaching agent. Formula: H2SO3
  • superconfidence — great or extreme confidence, overconfidence
  • superordination — Logic. the relation between a universal proposition and a particular proposition of the same quality containing the same terms in the same order.
  • suppressor grid — an electrode placed between the screen grid and anode of a valve. Its negative potential, relative to both screen and anode, prevents secondary electrons from the anode reaching the screen
  • thermoperiodism — the effect on an organism of rhythmic fluctuations in temperature.
  • threshold price — the highest price a retailer is allowed to sell a particular good at
  • trading profits — profits made from the buying and selling of goods and services
  • trapdoor spider — any of various, often large, spiders (esp. family Ctenizidae) that dig a burrow and cover the entrance with a hinged lid like a trapdoor
  • uncorresponding — identical in all essentials or respects: corresponding fingerprints.
  • under suspicion — suspected of a crime
  • undisappointing — not disappointing
  • unpolished rice — a partly refined rice, hulled and deprived of its germ but retaining some bran.
  • unsophisticated — not sophisticated; simple; artless.
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