Definition of arris in English:

arris

Syllabification: ar·ris
Pronunciation: /ˈaris
 
/

noun

Architecture
  • A sharp edge formed by the meeting of two flat or curved surfaces.
    More example sentences
    • He noticed the two arris hip tiles that had fallen and saw that two adjacent tiles had become dislodged.

Origin

late 17th century: alteration of early modern French areste 'sharp ridge', earlier form of arête.

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Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
noun
elaborate ornamentation of a vocal melody