A.A.Q.M.G. Acting Assistant Quartermaster-general.
A.A.S., Americanæ Antiquarianæ Societatis Socius, Fellow of the American Academy.
A.B. Able-bodied seaman.
A.B., Artium Baccalaureus=Bachelor of Arts.
Abb. Abbess; Abbot; Abbey.
abbr. or abbrev. Abbreviated, or Abbreviation.
Abd. Abdicated.
A.B.F.M. American Board of Foreign Missions.
ab init., ab initio=From the beginning.
abl. Ablative.