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[uh-rab-uh-nohs, ar-uh-buh-]
noun Chemistry.
  1. a white, crystalline, water-soluble solid, C5H10O5, obtained from plant gums or made synthetically from glucose, used chiefly as a culture medium in bacteriology.
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Origin of arabinose

1880–85; arabin the soluble essence of certain gums ((gum) arab(ic)) + -in2) + -ose2
Also called pectinose, pectin sugar.
Related formsa·rab·i·nos·ic [uh-rab-uh-nos-ik, ar-uh-buh-] /əˌræb əˈnɒs ɪk, ˌær ə bə-/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for arabinose

Historical Examples

  • This was directly established for glucose, lævulose, galactose, and arabinose .

    Researches on Cellulose

    C. F. Cross

  • On hydrolysis, it yields glucose, arabinose, and d-mandelo nitrile.

    The Chemistry of Plant Life

    Roscoe Wilfred Thatcher

  • It is, therefore, similar to amygdalin, except that one glucose molecule is replaced by arabinose.

    The Chemistry of Plant Life

    Roscoe Wilfred Thatcher

British Dictionary definitions for arabinose


  1. a pentose sugar in plant gums, esp of cedars and pines. It is used as a culture medium in bacteriology. Formula: C 5 H 10 O 5
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Word Origin

C19: from arabin (from (gum) arab (ic) + -in) + -ose ²
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012