MSA

1. abbreviationinitialismInitialism of Modern Standard Arabic (Fusha).
2. abbreviationinitialismInitialism of Modern South Arabian.

   Synonyms: MSAL

3. USabbreviationinitialismInitialism of Michigan Statutes Annotated.
4. abbreviationinitialismInitialism of Middle Stone Age.
5. abbreviationinitialismJava programming languageInitialism of Mobile Service Architecture.
6. MalaysiaSingaporeabbreviationhistoricalinitialismaeronauticsInitialism of Malaysia-Singapore Airlines.

plural MSAs

1. IrelandUKabbreviationcountableinitialismuncountableInitialism of motorway service area.
2. abbreviationcountableinitialismuncountablemedicineInitialism of multiple system atrophy.
3. USabbreviationcountableinitialismuncountabledemographicsInitialism of metropolitan statistical area.
4. abbreviationcountableinitialismuncountablelawInitialism of master service agreement.
5. abbreviationcountableinitialismuncountableInitialism of Master Settlement Agreement.
6. abbreviationcountableinitialismuncountableaeronauticsInitialism of minimum safe altitude.
7. abbreviationcountableuncountableAbbreviation of mechanically steered array.
8. abbreviationcountableinitialismuncountablecomputingInitialism of mail submission agent.

   A “mail submission agent” (MSA) that accepts outgoing mail from an MUA, grooms it, and submits it to the transport system[.]

   2011, Evi Nemeth et al., UNIX and Linux System Administration Handbook, Pearson Education, →ISBN, page 744