Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Something, such as an awning or a billed cap, that is used or worn as a protection from the sun's rays.

from The Century Dictionary.

  • noun Something used as a protection from the rays of the sun.
  • noun A hood or front-piece made of silk shirred upon whalebones, worn over the front of a bonnet as a protection from sun or wind. Such hoods were in fashion about 1850. Compare ugly, n.
  • noun A kind of awning projecting from the top of a shop-window.
  • noun A dark or colored glass used upon a sextant or telescope to diminish the intensity of the light in observing the sun.
  • noun A tube projecting beyond the objective of a telescope to cnt off strong light.
  • noun A shadehat

from the GNU version of the Collaborative International Dictionary of English.

  • noun A small parasol.
  • noun An awning.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun Something to keep the sun off, something to create shade from the sun.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a handheld collapsible source of shade
  • noun a canopy made of canvas to shelter people or things from rain or sun

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Middle English *sunschade, from Old English sunsceadu, sunnsceadu ("a veil, a sun-shade, a covering to keep off the sun"), equivalent to sun +‎ shade.

Examples

  • But should Earth be faced with an abrupt climate crisis, a space sunshade is a technically feasible solution.

    Science Press Releases

  • "Oh, you may make fun," said Anna, snapping open the frothy thing she called a sunshade, "but you don't know how I lie awake nights, shuddering lest Lena grow up a near-sighted girl with no color and serious views."

    Life at High Tide

  • To some, such as Wigley, a sunshade could be a rational strategy to buy time for the long labor of converting to a carbon-neutral energy supply.

    Gyre.org - Tracking the Next Military and Technological Revolutions

  • To some, such as Wigley, a sunshade could be a rational strategy to buy time for the long labor of converting to a carbon-neutral energy supply.

    EcoEarth.Info Environment RSS Newsfeed

  • Another study, published in Geophysical Research Letters, showed that reflecting incoming solar radiation (through the use of a large "sunshade") would impact the hydrological cycle, leading to a drier global climate.

    Jeremy Jacquot: Slouching towards geo-engineering?

  • Quite literally, the quaint and elliptical passage runs: 'The shameless one me "sunshade" only,' which the Commentary explains as 'My husband calls me not even an umbrella which he makes for his livelihood.'

    Psalms of the Sisters

  • A suggested high-atmosphere "sunshade" of particles to battle global warming could reduce energy production from centralized solar power plants.

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  • Attempts to deal with global warming by putting a particulate "sunshade" into the atmosphere would have adverse effects on solar power generation, according to a US federal boffin.

    Alex Jones' Prison Planet.com

  • Dan Murphy of the National Oceanic and Atmospheric Administration (NOAA) investigates a major inspiration for "sunshade" schemes, the volcanic eruption of Mount Pinatubo in 1991.

    Alex Jones' Prison Planet.com

  • Researchers at the National Oceanic and Atmospheric Administration, meanwhile, warned that suggestions for a high-atmosphere "sunshade" of particles to battle global warming could reduce energy production from solar power plants.

    Taipei Times

Comments

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  • "n. A hood or front-piece made of silk shirred upon whalebones, worn over the front of a bonnet as a protection from sun or wind. Such hoods were in fashion about 1850. Compare ugly, n."

    -- from The Century Dictionary and Cyclopedia

    January 27, 2016