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

  • sodium chlorate — a colorless, water-soluble solid, NaClO 3 , cool and salty to the taste, used chiefly in the manufacture of explosives and matches, as a textile mordant, and as an oxidizing and bleaching agent.
  • sodium chloride — salt1 (def 1).
  • sodium citrates — the sodium salts of citric acid (monosodium citrate, disodium citrate, trisodium citrate)
  • sodium ethylate — a white, hygroscopic powder, C 2 H 5 ONa, that is decomposed by water into sodium hydroxide and alcohol: used chiefly in organic synthesis.
  • sodium fluoride — a colorless, crystalline, water-soluble, poisonous solid, NaF, used chiefly in the fluoridation of water, as an insecticide, and as a rodenticide.
  • sodium monoxide — a white powder, Na 2 O, that reacts violently with water to produce sodium hydroxide.
  • 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 silicate — a substance having the general formula, Na2O.xSiO2, where x varies between 3 and 5, existing as an amorphous powder or present in a usually viscous aqueous solution
  • sodium stearate — Sodium stearate is a salt of stearic acid used as a surfactant (= a substance that reduces the surface tension of a liquid and allows it to foam) in order to aid the solubility of hydrophobic substances in oral medicines.
  • 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
  • soft-boiled egg — boiled egg with runny yolk
  • solar radiation — energy radiated from the sun in the form of electromagnetic waves, including visible and ultraviolet light and infrared radiation.
  • soldier's heart — cardiac neurosis.
  • soldier's medal — a medal awarded to any member of the Army of the United States, or of any military organization serving with it, who distinguishes himself or herself by heroism not involving conflict with an enemy.
  • solenoid switch — A solenoid switch is an electrical switch that is often used where a high current circuit, such as a starter motor circuit, is brought into operation by a low current switch.
  • solid injection — injection of fuel into an internal-combustion engine without an air blast.
  • solomon islands — (used with a plural verb) an archipelago in the W Pacific Ocean, E of New Guinea; important World War II battles; politically divided between Papua New Guinea and the Solomon Islands.
  • somerset island — an island in the Arctic Ocean in Nunavut, Canada, NW of Baffin Island. 9594 sq. mi. (24,848 sq. km).
  • 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.
  • soul-destroying — Activities or situations that are soul-destroying make you depressed, because they are boring or because there is no hope of improvement.
  • sound deadening — a process or material that reduces the resonance or volume of sound
  • sound recordist — recordist.
  • sound symbolism — a nonarbitrary connection between phonetic features of linguistic items and their meanings, as in the frequent occurrence of close vowels in words denoting smallness, as petite and teeny-weeny.
  • sound-and-light — combining sound effects or music with unusual lighting displays: to promote a product with a spectacular sound-and-light presentation.
  • sounding rocket — a rocket equipped with instruments for making meteorological observations in the upper atmosphere.
  • 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.
  • stage direction — an instruction written into the script of a play, indicating stage actions, movements of performers, or production requirements.
  • stamford bridge — a village in N England, east of York: site of a battle (1066) in which King Harold of England defeated his brother Tostig and King Harald Hardrada of Norway, three weeks before the Battle of Hastings
  • stamping ground — a habitual or favorite haunt.
  • stand in awe of — to respect and fear
  • standardization — to bring to or make of an established standard size, weight, quality, strength, or the like: to standardize manufactured parts.
  • standing orders — Military. (formerly) a general order always in force in a command and establishing uniform procedures for it; standard operating procedure.
  • starvation diet — insufficient food to stay alive
  • state education — education provided by the state; education which is not private
  • steroidogenesis — the formation of steroids, as by the adrenal cortex, testes, and ovaries.
  • stilpnosiderite — a resinous variety of limonite with a black-brown colour
  • stomping ground — a habitual or favorite haunt.
  • storage disease — a metabolic disorder characterized by excessive storage in certain cells of normal metabolic intermediates, as fats, iron, and carbohydrates.
  • store detective — A store detective is someone who is employed by a shop to walk around the shop looking for people who are secretly stealing goods.
  • straightforward — going or directed straight ahead: a straightforward gaze.
  • strait of dover — a strait between SE England and N France, linking the English Channel with the North Sea. Width: about 32 km (20 miles)
  • strontium oxide — a white insoluble solid substance used in making strontium salts and purifying sugar. Formula: SrO
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