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[ar-is] /ˈær ɪs/
noun, Architecture.
a sharp ridge, as between adjoining channels of a Doric column.
the line, ridge, or hip formed by the meeting of two surfaces at an exterior angle.
Also called piend.
Origin of arris
1670-80; < Middle French areste; see arête Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for arrises
Historical Examples
  • When the work will permit, it is desirable to round the arrises to about a ⅜-in.

    Concrete Construction Halbert P. Gillette
  • After this, the arrises may again be planed until it has 16 and then 32 sides.

    Mission Furniture H. H. Windsor
  • Much skill and care is required to retain the arrises sharp and the curved members of accurate and proportionate outline.

  • It is well to chamfer the arrises at the end of the tenon to insure its starting easily into the mortise.

    Handwork in Wood

    William Noyes
British Dictionary definitions for arrises


noun (pl) -ris, -rises
a sharp edge at the meeting of two surfaces at an angle with one another, as at two adjacent sides of a stone block
Word Origin
C17: apparently from Old French areste beard of grain, sharp ridge; see arête
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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