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angle of repose

noun, Geology
the maximum slope, measured in degrees from the horizontal, at which loose solid material will remain in place without sliding.
Compare angle of slide.
Origin of angle of repose
1875-80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for angle of repose
  • The angle of repose increases as air pressure diminishes.
  • The inclination of a slope on which boulders would stay put was the angle of repose.
  • Every pile of loose particles has a unique angle of repose, depending upon the material it's made from.
  • The natural angle of repose is defined as the angle at which material can be placed without sliding downhill due to gravity.
  • The angle of repose of fly ash is typically less than that of cement.
  • The size and moisture content of the material affects the angle of repose and can allow gravity flow.
  • Sealed pool steel angle of repose details must be provided where required.
  • The angle of repose for non-cohesive sediments these values are relatively well bounded.
  • angle of repose gives an idea of grain structure: the higher the angle of repose value, the lower the flow rate.
  • As this pile gained material at the top, it would occasionally slide down to the angle of repose.
British Dictionary definitions for angle of repose

angle of repose

the maximum angle to the horizontal at which rocks, soil, etc, will remain without sliding
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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