In chemistry, it means a substance that can act as either acid or base. An example is amino acids and water. See also amphiprotic.
... 80.0/km² (207.1/mi²). The racial makeup of the town is 90.49% White, 3.63% African American, 0.16% Native American, 1.05% Asian, 0.03% Pacific Islander, 2.62% ...