Sardonyx

3 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Sardonyx \Sar"do*nyx\, n. [L., fr. Gr. ?. See {Sard}, and
     {Onyx}.] (Min.)
     A variety of onyx consisting of sard and white chalcedony in
     alternate layers.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  sardonyx
       n : an onyx characterized by parallel layers of sard and a
           different colored mineral

From Easton's 1897 Bible Dictionary [easton]:

  Sardonyx
     (Rev. 21:20), a species of the carnelian combining the sard and
     the onyx, having three layers of opaque spots or stripes on a
     transparent red basis. Like the sardine, it is a variety of the
     chalcedony.