hydroxide ion

noun

1. the anion OH−.

Word History and Origins

Origin of hydroxide ion¹

First recorded in 1950–55

Example Sentences

That is, different concentrations of hydrogen-ion or of hydroxide-ion are required to change their colors.

From Project Gutenberg

The second table gives, similarly, the concentrations of hydroxide-ion required to produce the changes of tint indicated.

From Project Gutenberg

This is an indicator for bases and acids, like litmus, but it is less sensitive to hydroxide-ion than is litmus.

From Project Gutenberg