[sahr-don-iks, sahr-dn-]


a chalcedony that is used for cameos and has sard and chalcedony of another color, usually white, arranged in straight parallel bands.

Origin of sardonyx

1300–50; Middle English < Latin < Greek sardónyx; see sard, onyx Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sardonyx

Historical Examples of sardonyx

  • On a rock of sardonyx he strove to break it then, but Durendala remained unharmed.

  • Van Busch was in the act of taking back the sardonyx signet-ring.

    The Dop Doctor

    Clotilde Inez Mary Graves

  • And after dinner she read me the first part of Sardonyx; it took three hours.

    The Martian

    George Du Maurier

  • It is a happy phrase, that which closes the career of Sardonyx.

    The Martian

    George Du Maurier

  • But they have no more to do with Sardinians than they have with sardines or sardonyx.

    More Science From an Easy Chair

    Sir E. Ray (Edwin Ray) Lankester

British Dictionary definitions for sardonyx



a variety of chalcedony with alternating reddish-brown and white parallel bands, used as a gemstone. Formula: SiO 2

Word Origin for sardonyx

C14: via Latin from Greek sardonux, perhaps from sardion sardine ² + onux nail
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