17-letter words containing a, p, o, s, t, r
- rotation of crops — a system of rotating in a fixed order the kinds of crops, as grain or grass, grown in the same field, to maintain soil fertility
- rough puff pastry — a rich flaky pastry made with butter and used for pie-crusts, flans, etc
- safety precaution — a precaution that is taken in order to ensure that something is safe and not dangerous
- saint christopher — Saint, died a.d. c250, Christian martyr.
- secondary product — a product that is not the main product of an industry; a by-product
- self-appreciation — gratitude; thankful recognition: They showed their appreciation by giving him a gold watch.
- self-presentation — an act of presenting.
- self-preservation — preservation of oneself from harm or destruction.
- self-purification — a natural process of purifying, as the ability of a body of water to rid itself of pollutants.
- separation center — a place at which military personnel are processed for release from active service.
- separation energy — binding energy (def 1).
- set one's cap for — a close-fitting covering for the head, usually of soft supple material and having no visor or brim.
- shetland pullover — a thick woollen sweater made from Shetland wool
- shooting practice — practice in shooting for soldiers or other people who shoot guns
- shortcrust pastry — a basic type of pastry that is made with half the quantity of fat to flour, and has a crisp but crumbly texture
- slap on the wrist — a sharp blow or smack, especially with the open hand or with something flat.
- sleep deprivation — a condition in which you have not had enough sleep
- social enterprise — a business organization that works to benefit society as a whole
- 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 .
- software platform — a major piece of software, as an operating system, an operating environment, or a database, under which various smaller application programs can be designed to run.
- 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.
- southampton water — an inlet of the English Channel in S England
- southern sporades — a group of Greek islands in the Aegean, including the Dodecanese, lying off the SW coast of Turkey
- spark photography — photography of fast-moving objects, as bullets, by the light of an electric spark.
- spectroheliograph — an apparatus for making photographs of the sun with a monochromatic light to show the details of the sun's surface and surroundings as they would appear if the sun emitted only that light.
- spectroradiometer — an instrument for determining the radiant-energy distribution in a spectrum, combining the functions of a spectroscope with those of a radiometer.
- spectroscopically — an optical device for producing and observing a spectrum of light or radiation from any source, consisting essentially of a slit through which the radiation passes, a collimating lens, and an Amici prism.
- spenserian sonnet — a sonnet employing the rhyme scheme abab, bcbc, cdcd, ee.
- sperrin mountains — a mountain range in NW Northern Ireland
- spiritual bouquet — the spiritual presentation of a good work to another person.
- split keyboarding — the act or practice of editing data from one terminal on another terminal
- split personality — multiple personality.
- sports facilities — places and things for doing sports
- spot-illustration — a rounded mark or stain made by foreign matter, as mud, blood, paint, ink, etc.; a blot or speck.
- 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.
- steamboat springs — a town in NW Colorado: ski resort.
- stereolithography — a process for creating three-dimensional objects using a computer-controlled laser to build up the required structure, layer by layer, from a liquid photopolymer that solidifies.
- stereophotography — photography producing stereoscopic images.
- storm in a teacup — a violent fuss or disturbance over a trivial matter
- subscription rate — the price charged for a subscription
- sulfurated potash — a yellowish-brown mixture consisting mainly of potassium polysulfides and potassium thiosulfate, used in treating mange.
- super-nationalism — an extreme or fanatical loyalty or devotion to a nation.
- superalimentation — nourishment; nutrition.
- supercolumniation — the placing of one order of columns above another.
- supernova remnant — an expanding shell of gas, with accompanying strong radio and x-ray emissions, produced by a supernova.
- superregeneration — regeneration in which a signal is alternately amplified and quenched at a frequency slightly above the audible range to achieve high sensitivity with a single tube.
- support mechanism — any formal system or method of providing support or assistance
- supra-nationalism — outside or beyond the authority of one national government, as a project or policy that is planned and controlled by a group of nations.
- swash plate motor — a collar or face plate on a shaft that is inclined at an oblique angle to the axis of rotation and converts reciprocating motion to rotation