Definition of "Ab"

(immunology) Antibody.

(Judaism) Av.  examples

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

(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.  examples

(dated) An Ancient Egyptian amulet in the shape of a heart ( ).  examples

(title) Abbreviation of Abbot.  examples