[ raf-uh-nohs ]
/ ˈræf əˌnoʊs /

noun Biochemistry.

a colorless, crystalline trisaccharide, C18H32O16⋅5H2O, with little or no sweetness, occurring in the sugar beet, cottonseed, etc., and breaking down to fructose, glucose, and galactose on hydrolysis.

Origin of raffinose

1875–80; < French raffin(er) to refine (see raffinate) + -ose2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for raffinose

  • Three trisaccharides which are non-reducing sugars are found in plants; namely, raffinose, gentianose, and melizitose.

    The Chemistry of Plant Life|Roscoe Wilfred Thatcher
  • The hydrolysis of raffinose presents several interesting possibilities.

    The Chemistry of Plant Life|Roscoe Wilfred Thatcher
  • It is a constituent of sucrose, of raffinose, and of the polysaccharide inulin, from which it may be obtained by hydrolysis.

    The Chemistry of Plant Life|Roscoe Wilfred Thatcher

British Dictionary definitions for raffinose


/ (ˈræfɪˌnəʊz, -ˌnəʊs) /


biochem a trisaccharide of fructose, glucose, and galactose that occurs in sugar beet, cotton seed, certain cereals, etc. Formula: C 18 H 32 O 16

Word Origin for raffinose

C19: from French raffiner to refine + -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

Science definitions for raffinose


[ răfə-nōs′ ]

A white crystalline sugar obtained from cottonseed meal, sugar beets, and molasses. Raffinose is an oligosaccharide, consisting of three simple sugars (fructose, galactose, and glucose) linked together. Chemical formula: C18H32O16.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.