Pronunciation: [ɐɹˈɪs] (IPA) 
The word "Arris" is pronounced /ˈærɪs/. It refers to the sharp edge formed by two surfaces meeting at an angle, such as in the corner of a building or between two pieces of wood. The spelling of this word can be confusing, as it is often mistaken for "Aris" or "Eris". The correct spelling includes two "r's" and one "s". The pronunciation of the first syllable is similar to the word "air", followed by a short "i" sound and the sounds "ss".
Arris is a term used in various fields, such as architecture, carpentry, and geology, with slightly different meanings in each context.
In architecture and carpentry, an arris refers to the sharp edge or corner formed by the intersection of two surfaces, typically at a 90-degree angle. It is commonly found in columns, pilasters, and molding profiles, providing a visually clean transition between two different surfaces. The arris serves to enhance the aesthetic appeal and visual sharpness of architectural elements.
In the realm of woodworking, an arris may also refer to the process of beveling or chamfering the edge of a piece of timber to prevent splintering or to give it a decorative finish.
In geology, an arris signifies a narrow ridge or elongated crest that appears as a result of erosion or weathering. It is commonly formed on cliffs or rock formations, where the relentless action of natural forces, such as wind or water, erodes the rock surface more rapidly along certain lines.
Overall, whether in architecture, carpentry, or geology, an arris symbolizes a sharp edge or corner that denotes the meeting point of distinct surfaces, providing visual appeal, strength, or evidence of natural processes.
In joinery and masonry, the line or edge of meeting of two surfaces.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "arris" originated from the Middle English term "eris", which in turn came from the Old French word "areste". It ultimately traces back to the Latin word "arista", meaning "ear of grain". Over time, the term "arris" evolved to refer to the sharp edge or ridge created by the meeting of two surfaces, particularly in architecture.
