Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “PCB”


noun [C or U]    
PRODUCTION, ENVIRONMENT abbreviation for polychlorinated biphenyl: a harmful chemical that is used in industry: PCBs have been used in many products including electrical equipment, inks, adhesives, and paints.
(Definition of PCB noun from the Cambridge Business English Dictionary © Cambridge University Press)
Focus on the pronunciation of PCB

Definitions of “PCB” in other dictionaries

Word of the Day

pump iron

to lift heavy weights for exercise

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More