isoionic point

[ ahy-soh-ahy-on-ik, ahy-soh- ]
/ ˈaɪ soʊ aɪˈɒn ɪk, ˌaɪ soʊ- /

noun Chemistry.

the hydrogen ion concentration at which the concentration of the dipolar ion is at a maximum.

Origin of isoionic point

First recorded in 1930–35; iso- + ionic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019