• synonyms


noun Chemistry.
  1. any hydrophilic, colloidal substance found in or obtained from various kelps, as alginic acid or one of its soluble salts.
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Origin of algin

First recorded in 1880–85; alg(ae) + -in2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for algin

Historical Examples

  • Algin, a viscous, gummy substance obtained from certain seaweeds, more especially those of the genus Laminaria.

    The New Gresham Encyclopedia. Vol. 1 Part 1


  • The algin extracted from the Pacific kelp can be used as a rubber surrogate for water-proofing cloth.

    Creative Chemistry

    Edwin E. Slosson

British Dictionary definitions for algin


  1. alginic acid or one of its esters or salts, esp the gelatinous solution obtained as a by-product in the extraction of iodine from seaweed, used in mucilages and for thickening jellies
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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

algin in Science


  1. A mucilaginous polysaccharide occurring in the cell walls of brown algae. Its derivatives are widely used as thickening, stabilizing, emulsifying, or suspending agents in industrial, pharmaceutical, and food products, such as ice cream.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.