Conchoidal

Acceptable For Game Play - US & UK word lists

This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

The American Heritage® Dictionary of the English Language, 4th Edition
  • adj. Of, relating to, or being a surface characterized by smooth, shell-like convexities and concavities, as on fractured obsidian.
    • Wiktionary, Creative Commons Attribution/Share-Alike License
  • adj. Of a type of irregular fracture having planar, concentric curves, like those on a mussel shell. Of a mineral having such a fracture, such as flint.
    • the GNU version of the Collaborative International Dictionary of English
  • adj. Having elevations or depressions in form like one half of a bivalve shell; -- applied principally to a surface produced by fracture.
    • The Century Dictionary and Cyclopedia
  • In mineralogy, having convex elevations and concave depressions like shells: applied principally to such a surface produced by fracture, as exemplified in obsidian.
  • In mathematics, pertaining or relating to the conchoid: as, Holm's conchoidal screw.
    • Word Usage
    "This is referred to as conchoidal fracture; glass fractures in the same way."
     
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