# HAA5

> English word · Noun

## Definitions
1. The sum of the mass concentrations of five haloacetic acids regulated by the USEPA (mono-, di- and trichloroacetic acid and mono- and dibromoacetic acid)

## Etymology
From HaloAcetic Acids.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/haa5