- Having two opposite characteristics, especially having the capacity of reacting as either an acid or a base; e.g., Al(OH)3 Ξ H3AlO3 or an amino acid. [G. amphoteroi (pl.), both, fr. ampho, both]
* * *am·pho·ter·ic .am(p)-fə-'ter-ik adj partly one and partly the other specif capable of reacting chemically either as an acid or as a baseam·pho·ter·ism -'ter-.iz-əm n
* * *am·pho·ter·ic (am-fə-terґik) [Gr. amphoteros pertaining to both] having opposite characters; capable of acting either as an acid or as a base; combining with both acids and bases; affecting both red and blue litmus.
Medical dictionary. 2011.
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Amphoteric — Am pho*ter ic, a. [Gr. ? both.] Partly one and partly the other; neither acid nor alkaline; neutral. [R.] Smart. [1913 Webster] … The Collaborative International Dictionary of English
amphoteric — (adj.) neither acid nor alkaline, 1832, from Gk. amphoteros each or both of two, variant of AMPHI (Cf. amphi ) … Etymology dictionary
amphoteric — [am΄fə ter′ik] adj. [< Gr amphoteros, compar. of amphō, both; var. of amphi , AMPHI ] Chem. having both acid and basic properties … English World dictionary
amphoteric — adjective Etymology: International Scientific Vocabulary, from Greek amphoteros each of two, from amphō both more at ambi Date: circa 1849 partly one and partly the other; specifically capable of reacting chemically either as an acid or as a base … New Collegiate Dictionary
amphoteric — adj. [Gr. amphoteros, in both ways] 1. Possessing opposite characters. 2. Capable of acting either as a base or an acid … Dictionary of invertebrate zoology
amphoteric — Having both acidic and basic characteristics. This is true of proteins since they have both acidic and basic side groups (the charges of which balance at the isoelectric point) … Dictionary of molecular biology
amphoteric — /am feuh ter ik/, adj. Chem. capable of functioning either as an acid or as a base. [1840 50; < Gk amphóter(os) (comp. of ámpho both; c. L ambo) + IC] * * * … Universalium
amphoteric — adjective Having the characteristics of both an acid and a base, and capable of reacting as either; amphiprotic … Wiktionary
amphoteric — adj. functioning as both an acid and a base (Chemistry) … English contemporary dictionary
amphoteric — [ˌamfə tɛrɪk] adjective Chemistry able to react both as a base and as an acid. Origin C19: from Gk amphoteros, compar. of amphō both , + ic … English new terms dictionary