hydroxide ion

noun

1. the anion OH−.

Word History and Origins

Origin of hydroxide ion¹

First recorded in 1950–55

Example Sentences

On the one hand, the chemistry is clear: The highly unstable pure sodium or potassium wants to lose an electron, and this splits the water atom, producing a negatively charged hydroxide ion and hydrogen and forming an explosive gas that ignites.

From Newsweek

The substrate-generated hydroxide ion attacks the γ-phosphate, either concerted with the proton transfer or in a stepwise mechanism leading to GTP hydrolysis.

From Science Magazine

Yes, this is an ion, but is it just an ion or a hydroxide ion?

From Time Magazine Archive