# polychlorinated biphenyl

> English word · Noun · IPA /ˌpoʊliˌklɔrəˌneɪtəd ˈbaɪfənɪl/

## Definitions
1. Any of a class of aromatic organic compounds formed by the chlorination of the hydrocarbon biphenyl; they have many industrial applications but are now considered persistent organic pollutants.

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