from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. being able to both donate and accept a proton, and thus being able to react both as an acid and a base; amphoteric
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. having characteristics of both an acid and a base and capable of reacting as either
amphi- + proton + -ic (Wiktionary)