Dictionary.com
definitions
  • synonyms

PBB

Chemistry.
  1. any of the highly toxic and possibly carcinogenic aromatic compounds consisting of two benzene rings in which bromine takes the place of two or more hydrogen atoms: used as a fire retardant and additive for plastics.
Show More

Origin of PBB

p(oly)b(rominated) b(iphenyl)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018