Definitions of PBT:
- noun: (networking) Initialism of Provider Backbone Transport.
- noun: (law enforcement) Initialism of Preliminary Breath Test.
- noun: (organic chemistry) Initialism of polybutylene terephthalate. [(organic chemistry) A plastic used industrially as an electrical insulator]
- noun: (toxicology) Initialism of persistent, bioaccumulative and toxic.
(Definitions from Wiktionary)
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