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See also: BSl. and bsł.


Proper noun[edit]


  1. Initialism of British Sign Language.
  2. (software, copyright law) Initialism of Business Source License.
    • 2022 September 8, Paul Kunert, quoting Jonas Bonér, “Open source biz sick of FOSS community exploitation overhauls software rights”, in The Register[1]:
      The BSL is a ‘Source Available’ license that freely allows using the code for development and other non-production work such as testing. Production use of the software requires a commercial license from Lightbend.


BSL (uncountable)

  1. Acronym of breed-specific legislation.
  2. Initialism of biosafety level.
    • 2022 July 15, Carl Zimmer, “Bat Virus Studies Raise Questions About Laboratory Tinkering”, in The New York Times[2], →ISSN:
      The scientists then carried out their experiments at the same level of security as their other work with the coronaviruses, known as Biosafety Level 3, or BSL-3.