SCA

1. abbreviationinitialismaeronauticsInitialism of Shuttle Carrier Aircraft.
2. abbreviationinitialismcomputingInitialism of Software Communications Architecture.
3. abbreviationinitialismcomputingInitialism of Strong Customer Authentication.
4. abbreviationinitialismInitialism of Suez Canal Authority.

   aspects of co-operation between Libya and SCA were probed particularly the issues relating to shipbuilding and repair and the naval constructions. The guest was awarded a souvenir medal and his visit came to a close by a cruise down the Canal.

   1990, Suez Canal Report, page 22

5. abbreviationinitialismInitialism of Society for Creative Anachronism.

   "People who were involved in the SCA were wearing their clothing all day, or maybe all weekend," Astrid Bear recalled.

   2022, Andrew Liptak, Cosplay: A History: The Builders, Fans, and Makers Who Bring Your Favorite Stories to Life, page 34

plural SCAs

1. abbreviationcountableinitialismuncountablebusinessInitialism of sustainable competitive advantage.
2. abbreviationcountableinitialismuncountableanatomyInitialism of superior cerebellar artery.
3. abbreviationcountableinitialismuncountablemedicineInitialism of sudden cardiac arrest.
   1. InternetcountableuncountablemedicineIn the UGSC (Underground Subliminal Community), a method or intended outcome of "respawning" where sudden cardiac arrest is induced through "subliminal audio" tracks to facilitate reality shifting.