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Chitin vs Undefined - What's the difference?

chitin | undefined |

As a noun chitin

is chitin.

As an adjective undefined is

lacking a definition or value.

chitin

English

(wikipedia chitin)

Noun

  • (carbohydrate) A complex polysaccharide, a polymer of N-acetylglucosamine, found in the exoskeletons of arthropods and in the cell walls of fungi; thought to be responsible for some forms of asthma in humans.
  • * 1880 , Arthur Gamgee, ''A Text-book of the Physiological Chemistry of the Animal Body, Macmillan, p. 299
    • Chitin usually occurs throughout Invertebrates in the form of an investment to the outermost cellular layer or ectoderm.
  • * 2004 , New Scientist , 11 Sep 2004, p.19
    • The robot’s energy source is the sugar in the polysaccharide called chitin that makes up a fly’s exoskeleton.

    Derived terms

    * chitinous

    References

    * *

    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