Definition of "PCB"

PCB

noun
countable and uncountable, plural PCBs
1. (electronics) Initialism of printed circuit board.
2. (organic chemistry) Initialism of polychlorinated biphenyl.
  Quotations
  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.
  1986, Valerie M. Thom, “Coastal habitats”, in Birds in Scotland, London: T & AD Poyser, published 2011, page 25
3. (informatics) Initialism of program control block.
4. (electronics) Initialism of physically changeable bit.
5. (Pakistan) Initialism of Pakistan Cricket Board.
phrase
1. (business) Initialism of please call back.