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burning glass

a converging lens used to produce heat or ignite substances by focusing the sun's rays.
Also called sunglass.
Origin of burning glass
First recorded in 1560-70 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for burning glass
Historical Examples
  • That collector field of ours gathers energy just like a burning glass.

    Empire Clifford Donald Simak
  • That's how that wise man what's his name with the burning glass.

    Ulysses James Joyce
  • Or broken bottles in the furze act as a burning glass in the sun.

    Ulysses James Joyce
  • I took some of my own hair, frizzled it with a burning glass, and gave it to him.

    Curiosities of Superstition

    W. H. Davenport Adams
  • The action is that of a burning glass, and extends throughout the leaf-tissues.

    Disease in Plants H. Marshall Ward
  • That burning glass is what did it, said one more reflective man.

    The Girls of Central High Gertrude W. Morrison
  • All in vain: moonlight gives no heat, even through a burning glass.

  • This was notably the case with The burning glass, her last novel.

  • The effect may be compared to playing the point of a ray of sunlight focussed through a burning glass.

  • When we got back to the hotel he amused us by setting fire to a glass of alcohol with a burning glass.

    The Art of Amusing Frank Bellew
British Dictionary definitions for burning glass

burning glass

a convex lens for concentrating the sun's rays into a small area to produce heat or fire
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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