Any of a class of polybrominated compounds derived from biphenyl, which have various industrial applications and are persistent environmental pollutants; abbreviated PBB.
Origin
1970s; earliest use found in Time.
Definition of polybrominated biphenyl in US English:
polybrominated biphenyl
noun
Chemistry
Any of a class of polybrominated compounds derived from biphenyl, which have various industrial applications and are persistent environmental pollutants; abbreviated PBB.