# pOH

> English word · Noun · frequency rank #60,378

## Definitions
1. The negative of the base 10 logarithm of the concentration of hydroxide ions, measured in moles per liter.

## Etymology
From p, denoting negative logarithm, and OH, denoting the hydroxyl radical.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/poh