Also found in: Medical.
Any of various organic compounds that result from a reaction between an acid or alkali and a protein and are soluble in weak acids or alkalis and insoluble in neutral solutions.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.