sardonyx

Borrowed from Latin sardonyx.

sardonyx (countable and uncountable, plural sardonyxes)

1. A gemstone having bands of red sard; a variety of onyx or chalcedony.
   • Bible, Revelation xxi. 20

     The fifth, sardonyx; the sixth, sardius; the seventh, chrysolyte; the eighth, beryl; the ninth, a topaz; the tenth, a chrysoprasus; the eleventh, a jacinth; the twelfth, an amethyst.

   • 1980, Colin Thubron, Seafarers: The Venetians, page 40:

     The large chalice at right is carved from a single chunk of sardonyx, a kind of onyx. Its gilded rim and base are decorated with tiny enamels depicting a host of popular saints, including Nicephorus (farthest left on rim), a Ninth Century patriarch and opponent of a religious movement to destroy icons.

2. (heraldry) A tincture of sanguine colour when the blazoning is done by precious stones.

• sardonyx on Wikipedia.Wikipedia

From the Ancient Greek σαρδόνυξ m (sardónux).

• (Classical) IPA^(key): /ˈsar.do.nyks/, [ˈsar.dɔ.nʏks]

sardonyx m or f (genitive sardonychos or sardonychis); third declension

1. sardonyx

• sardonycha
• sardonychātus
• sardonychus

• English: sardonyx
• Italian: sardonice

• sardŏnyx in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• sardonyx in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• sardŏnyx in Gaffiot, Félix (1934) Dictionnaire Illustré Latin-Français, Hachette, page 1,393/1
• sardonyx in William Smith, editor (1854, 1857) A Dictionary of Greek and Roman Geography, volume 1 & 2, London: Walton and Maberly
• “sardonyx” on page 1,691/3 of the Oxford Latin Dictionary (1st ed., 1968–82)