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amphoterism

[ ăm′fə-tĕrĭz′əm, ăm-fŏtə-rĭz′əm ]
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n.
The quality of exhibiting the characteristics of an acid and a base and having the capacity to react either as an acid or a base.
QUIZ
GOOSES. GEESES. I WANT THIS QUIZ ON PLURAL NOUNS!
Test how much you really know about regular and irregular plural nouns with this quiz.
Question 1 of 9
Which of the following nouns has an irregular plural 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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