a.b.

1. nauticalAble-bodied seaman.

1. abbreviationinitialismInitialism of as before.

plural A.B.s

1. abbreviationinitialismInitialism of able seaman or able-bodied seaman.
2. abbreviationinitialismInitialism of artium baccalaureus (“Bachelor of Arts”).
3. abbreviationinitialismInitialism of assembly bill.

   1 more example

   Assuming that A.B. 2098 is ambiguous, the state said, Shubb should adopt a "narrower construction" that avoids constitutional issues by requiring that misinformation include three elements: It is "false" (however that might be determined), it contradicts the "contemporary scientific consensus" (however that might be defined), and it is "contrary to the standard of care" (a concept that the law seems to redefine).

   2023 January 26, Jacob Sullum, “A Federal Judge Blocks California's Ban on Medical Advice That Promotes COVID-19 'Misinformation'”, in Reason

4. datedA blank for a person's name, perhaps followed by C.D., etc. for others.

   I, A.B., do swear that I will be faithful and bear true allegiance to Her Majesty Queen Victoria, Her heirs and successors according to law. So help me God!

   1900, Parliament of the United Kingdom, “Schedule, Constitution of the Commonwealth of Australia”, in Commonwealth of Australia Constitution Actᵂⁱᵏⁱˢᵒᵘʳᶜᵉ, page 2