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Chalcedony vs Undefined - What's the difference?

chalcedony | undefined |

As a noun chalcedony

is a form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally.

As an adjective undefined is

lacking a definition or value.

chalcedony

English

Noun

(chalcedonies)
  • A form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally.
  • *{{quote-magazine, date=2012-03
    • , author=Lee A. Groat , title=Gemstones , volume=100, issue=2, page=128 , magazine=(American Scientist) citation , passage=Although there are dozens of different types of gems, among the best known and most important are […] . (Common gem materials not addressed in this article include amber, amethyst, chalcedony , garnet, lazurite, malachite, opals, peridot, rhodonite, spinel, tourmaline, turquoise and zircon.)}}

    See also

    * (noun: types of minerals) agate, chert, flint, moganite * (adjective) conchoidal * (adverb) conchoidally * (noun) break, fracture, flake, shatter * (verb) knapp, break, fracture, flake, shatter

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined