Daily Almanac for
Nov 29, 2009
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protec'tive col'loid



Physical Chem.
a lyophilic colloid added to a lyophobic sol to lessen its sensitivity to the precipitating effect of an electrolyte.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

protectiveprotective coloration
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