PCB

plural PCBs

1. abbreviationcountableinitialismuncountablebusinessInitialism of printed circuit board.

   LED flexible PCB strip

2. abbreviationcountableinitialismuncountablechemistryInitialism of polychlorinated biphenyl.

   The paper found high levels of phased-out flame retardants like PCBs and PBDEs, as well as allegedly safe, newer replacements chemicals, such as chlorinated paraffins and organophosphates, across the globe.

   2023 October 18, Tom Perkins, “Flame retardant pollution threatens wildlife on all continents, research finds”, in The Guardian

   1 more example

   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, →ISBN, page 25

3. abbreviationcountableinitialismuncountablecomputingInitialism of program control block.
4. abbreviationcountableinitialismuncountablebusinessInitialism of physically changeable bit.

1. PakistanabbreviationinitialismInitialism of Pakistan Cricket Board.

1. abbreviationinitialismbusinessInitialism of please call back.