- Mineralogy. a variety of chalcedony having straight parallel bands of alternating colors.Compare Mexican onyx.
- (not used technically) an unbanded chalcedony dyed for ornamental purposes.
- black, especially a pure or jet black.
- Medicine/Medical. a nail of a finger or toe.
- black, especially jet black.
Origin of onyx
Examples from the Web for onyx
By contrast this cup is made of gold, onyx, precious stones, and the stone agate.Spain’s New ‘Holy Grail’: Jesus Couldn’t Afford That Kind of Bling
April 6, 2014
The 1952 onyx & diamond panther bracelet sold for $7,036,874, the highest ever paid for a bracelet or any Cartier at auction.Buying the Royal Jewels
December 3, 2010
At the Men of ONYX booth, I decided to give the Butt Plug Toss a whirl.Getting Whipped at Leather Pride
June 26, 2009
My brother Jean made me a present of an onyx of great beauty.The Memoires of Casanova, Complete
Jacques Casanova de Seingalt
The huge reception hall was trimmed from floor to dome in onyx and gold.The Root of Evil
Then, and not till then, had any one time to turn a glance towards the Onyx.The Three Midshipmen
Harrasford was credited with designs for a palace in onyx and marble.The Bill-Toppers
The pulpit is of carved stone with inlaid slabs of American onyx.The Kensington District
Geraldine Edith Mitton
- a variety of chalcedony with alternating black and white parallel bands, used as a gemstone. Formula: SiO 2
- a compact variety of calcite used as an ornamental stone; onyx marble. Formula: CaCO 3
Word Origin and History for onyx
mid-13c., from Old French oniche "onyx" (12c.), and directly from Latin onyx (genitive onychis), from Greek onyx "onyx-stone," originally "claw, fingernail" (see nail (n.)). So called because the mineral's color sometimes resembles that of a fingernail, pink with white streaks.
- A collection of pus in the anterior chamber of the eye.
- A type of chalcedony that occurs in straight and parallel bands of different colors, often black and white.