Amphoteric Definition
ămfə-tĕrĭk
adjective
Having the characteristics of an acid and a base and capable of reacting chemically either as an acid or a base.
American Heritage
Having both acid and basic properties.
Webster's New World
(chemistry) Having the characteristics of both an acid and a base, and capable of reacting as either; amphiprotic.
Wiktionary
Synonyms:
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other
Capable of reacting chemically as either an acid or a base. Water, ammonia, and the hydroxides of certain metals are amphoteric.
American Heritage Science
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Origin of Amphoteric
From Ancient Greek ἀμφότερος (amphoteros, “each of two”), from ἄμφω (amphō, “both”).
From Wiktionary
From Greek amphoteros each of two from amphō both
From American Heritage Dictionary of the English Language, 5th Edition
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