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17-letter words containing p, r, e

  • spatial frequency — the measure of fine detail in an optical image in terms of cycles per millimetre
  • special messenger — a postal worker who delivers mail by special delivery
  • special privilege — exclusive advantage
  • 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.
  • spectrohelioscope — a spectroheliograph.
  • spectromicroscope — a microscope with an attached spectroscope.
  • spectrophotometer — an instrument for making photometric comparisons between parts of spectra.
  • spectrophotometry — an instrument for making photometric comparisons between parts of spectra.
  • 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.
  • spectrum analyser — an instrument that splits an input waveform into its frequency components, which are then displayed
  • spectrum analysis — the determination of the constitution or condition of bodies and substances by means of the spectra they produce.
  • 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 correction — the reeducation of speech habits that deviate from accepted speech standards.
  • speed restriction — the maximum speed allowed for road vehicles, trains, or other vehicles
  • spenserian sonnet — a sonnet employing the rhyme scheme abab, bcbc, cdcd, ee.
  • spenserian stanza — the stanza used by Spenser in his Faerie Queene and employed since by other poets, consisting of eight iambic pentameter lines and a final Alexandrine, with a rhyme scheme of ababbcbcc.
  • sperrin mountains — a mountain range in NW Northern Ireland
  • spherical polygon — a closed figure formed by arcs of great circles on a spherical surface.
  • 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.
  • spiral bevel gear — a bevel gear having curved teeth tending to converge on the axis of rotation.
  • spiritual bouquet — the spiritual presentation of a good work to another person.
  • spiritual healing — faith healing
  • spiritus frumenti — whiskey.
  • split keyboarding — the act or practice of editing data from one terminal on another terminal
  • split personality — multiple personality.
  • spongy parenchyma — the lower layer of the ground tissue of a leaf, characteristically containing irregularly shaped cells with relatively few chloroplasts and large intercellular spaces.
  • spore mother cell — a cell from which a spore is produced
  • sports facilities — places and things for doing sports
  • 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
  • spring cankerworm — the striped, green caterpillar of any of several geometrid moths: a foliage pest of various fruit and shade trees, as Paleacrita vernata (spring cankerworm) and Alsophila pometaria (fall cankerworm)
  • 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.
  • stars and stripes — US national flag
  • steamboat springs — a town in NW Colorado: ski resort.
  • stenothermophilic — growing best within a narrow temperature range.
  • 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.
  • stereospecificity — (of a reaction) producing a simple stereoisomer.
  • stir one's stumps — to move or become active
  • storm in a teacup — a violent fuss or disturbance over a trivial matter
  • stratified sample — a sample that is not drawn at random from the whole population, but separately from a number of disjoint strata of the population in order to ensure a more representative sample
  • stray capacitance — undesired capacitance in equipment, occurring between the wiring, between the wiring and the chassis, or between components and the chassis
  • strike-slip fault — a geological fault on which the movement is along the strike of the fault
  • striped killifish — a killifish, Fundulus majalis, of the Atlantic coast of the U.S., the female of which is marked with black stripes.
  • subjective spirit — spirit, insofar as it falls short of the attainments of objective spirit.
  • 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.
  • sulphur butterfly — sulfur butterfly.
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