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[pen-tuh-san] /ˈpɛn təˌsæn/
noun, Biochemistry.
any of a class of polysaccharides that occur in plants, humus, etc., and form pentoses upon hydrolysis.
Origin of pentosan
< German (1892), equivalent to Pentos(e) pentose + -an -ane Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for pentosans
Historical Examples
  • That portion of the carbohydrates known as pentosans gives rise to furfuraldehyde, one of the important components of caffeol.

    All About Coffee William H. Ukers
  • The pentosans, araban and xylan, occur normally in the stems and outer seed coats of many common plants.

    The Chemistry of Plant Life Roscoe Wilfred Thatcher
British Dictionary definitions for pentosans


(biochem) any of a group of polysaccharides, having the general formula (C5H8O4)n: occur in plants, humus, etc
Word Origin
C20: from pentose + -an
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
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