arris

[ ar-is ]

/ ˈær ɪs /

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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.

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Also called piend.

Origin of arris

1670–80; <Middle French areste;see arête

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use arris in a sentence

Cutting off the outside arrises to the gaged lines leaves an octagonal stick.
Handwork in Wood|William Noyes
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
Much skill and care is required to retain the arrises sharp and the curved members of accurate and proportionate outline.
Encyclopaedia Britannica, 11th Edition, Volume 17, Slice 7|Various
In turning blocks it is necessary to provide some sort of cushion for them to turn on or broken arrises will result.
Concrete Construction|Halbert P. Gillette

When the work will permit, it is desirable to round the arrises to about a ⅜-in.
Concrete Construction|Halbert P. Gillette

British Dictionary definitions for arris

arris

/ (ˈærɪs) /

noun plural -ris or -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 for arris

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