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Feldspar vs Undefined - What's the difference?

feldspar | undefined |

As a noun feldspar

is (mineral) any of a large group of rock-forming minerals that, together, make up about 60% of the earth's outer crust the feldspars are all aluminum silicates of the alkali metals sodium, potassium, calcium and barium feldspars are the principal constituents of igneous and plutonic rocks.

As an adjective undefined is

lacking a definition or value.

feldspar

English

Alternative forms

* felspar

Noun

(en noun)
  • (mineral) Any of a large group of rock-forming minerals that, together, make up about 60% of the earth's outer crust. The feldspars are all aluminum silicates of the alkali metals sodium, potassium, calcium and barium. Feldspars are the principal constituents of igneous and plutonic rocks.

    • Related terms

    * feldspathic * feldspathoid

    Derived terms

    * feldsparlike

    See also

    * albite * bytownite * andesine * anorthite * granite * labradorite * microcline * mineral * oligoclase * orthoclase * rock

    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