{{wiktionary}} '''PTB''' may refer to: {{TOC right}} == Government and politics == * Bermuda Public Transportation Board * Bessarabian Peasants' Party ({{langx|ro|Partidul Țărănesc din Basarabia|link=no}}), a political party in the Kingdom of Romania * Brazilian Labour Party (1945) ({{langx|pt|Partido Trabalhista Brasileiro|link=no}}), dismantled after the 1964 military-led coup d'état * Brazilian Labour Party (1981) ({{langx|pt|Partido Trabalhista Brasileiro|link=no}}), merged with Patriota to form the new Democratic Renewal Party in 2022. * Pakistan Tobacco Board * Party of Labour of Burkina ({{langx|fr|Parti du Travail de Burkina|link=no}}), a political party in Burkina Faso * Physikalisch-Technische Bundesanstalt, the national metrology institute of Germany * Workers' Party of Belgium ({{langx|fr|Parti du Travail de Belgique|link=no}}), a Belgian political party
==Science and medicine== * ''N''-Phenacylthiazolium bromide, a cross-link breaker * Permian-Triassic boundary, a mass extinction event * Phosphotyrosine-binding domain (PTB-domain), a protein domain * Polypyrimidine tract-binding protein, an RNA-binding protein * Pulmonary tuberculosis, manifestation of tuberculosis in the lungs
==Technology== * Project team builder, a project management simulator * Public Test Build, in software testing * Push to break, electronics push switch * Packet Too Big, an ICMPv6 message; see IPv6 packet * Pounds of salt per thousand barrels of crude oil; see Desalter * .ptb, a file extension used by musical tablature authoring tool Power Tab Editor
== Transport == * Pentre-bach railway station, in Wales * Petit train de banlieue, a passenger train in Senegal * Petersburg station, an Amtrak station serving Petersburg, Virginia * Voepass Linhas Aéreas, a Brazilian airline
==Other uses== * ''P.T.B'' (album), by rapcore group Kingspade * Placer Theatre Ballet, an American ballet company * Portland Trail Blazers, an American professional basketball team * Proto-Tibeto-Burman language * Proto-Torres-Banks language, a reconstructed language from Vanuatu
==See also== * PTP (disambiguation) * The powers that be (disambiguation)
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