isoelectric point

isoelectric point

noun Chemistry.
the pH at which a substance is electrically neutral or at which it is at its minimum ionization.

Origin:
1895–1900

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World English Dictionary
isoelectric point
 
n
biochem the pH value at which the net electric charge of a molecule, such as a protein or amino acid, is zero

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

isoelectric point n.
The pH at which the electrolyte concentration of an amphoteric substance such as protein is electrically zero because the concentration of its cation form equals the concentration of its anion form.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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