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amphoteric

[am-fuh-ter-ik]
adjective Chemistry.
  1. capable of functioning either as an acid or as a base.

Origin of amphoteric

1840–50; < Greek amphóter(os) (comparative of ámphō both; cognate with Latin ambō) + -ic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Historical Examples of amphoteric

British Dictionary definitions for amphoteric

amphoteric

adjective
  1. chem able to function as either a base or an acidAlso: amphiprotic

Word Origin for amphoteric

C19: from Greek amphoteros each of two (from amphō both) + -ic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for amphoteric
adj.

"neither acid nor alkaline," 1832, from Greek amphoteros "each or both of two," variant of amphi-.

Online Etymology Dictionary, © 2010 Douglas Harper
amphoteric in Medicine

amphoteric

[ăm′fə-tĕr′ĭk]
adj.
  1. Having the capacity to react as either an acid or a base.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
amphoteric in Science

amphoteric

[ăm′fə-tĕr′ĭk]
  1. Capable of reacting chemically as either an acid or a base. Water, ammonia, and the hydroxides of certain metals are amphoteric.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.