Abbreviation of Alberta, a province of Canada. / Initialism of Artium baccalaureus.

Initialism of able seaman; able-bodied seaman. / Initialism of adult baby. / Initialism of afterburner. / Initialism of aid to the blind. / (military, aviation) Initialism of airbase.

Initialism of airborne. / Initialism of antiballistic. / (baseball) Initialism of at bat.

(immunology) Antibody.

(Judaism) Av.

A diminutive of the male given name Abner, from Hebrew, occasionally used as a formal given name.

(dated) In Egyptian belief, the heart and will and conscience of a person, especially that of the recently deceased which proceeds to the afterlife and is weighed as evidence during his or her judgement.

(title) Abbreviation of Abbot.

antibody

Abbreviation of about.