D defs.my
Entry 2 senses Webster, 1913

amphoteric

/(ăm`fō̇*tĕr"ĭk)/ · am·pho·ter·ic · IPA
01 a. Partly one and partly the other
  1. 1.
    Partly one and partly the other
  2. 2.
    Having both acidic and basic groups within the same molecule, and consequently neither acid nor alkaline; neutral.(Chem.) [R.]