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glucomannan (countable and uncountable, plural glucomannans)

  1. A water-soluble polysaccharide used as an emulsifier and thickener.
    • 2007 August 1, Harold Mcgee, “Ice Cream That’s a Stretch”, in New York Times[1]:
      The bulbs contain a mucilaginous carbohydrate called glucomannan, which the orchids use to retain water during dry periods.