Meaning of biphenyl | Babel Free

Definitions

1. A colourless solid hydrocarbon, C₁₂H₁₀, consisting of two benzene rings linked together by a single bond.
   uncountable
2. Any substituted or otherwise altered version of biphenyl, such as PCBs.
   countable

Examples

“halogenated biphenyls”

“Another environmental factor thought to be affecting some coastal birds, although comparatively little is yet known about its extent or origin, is the presence of marine pollutants such as polychlorinated biphenyls (PCBs) and toxic heavy metals.”

CEFR level