Ab

n.

1.

The fifth month of the Jewish year according to the ecclesiastical reckoning, the eleventh by the civil computation, coinciding nearly with August.

Noun	1.	AB - the blood group whose red cells carry both the A and B antigens Synonyms: group AB, type AB
	2.	AB - a bachelor's degree in arts and sciences Synonyms: Artium Baccalaurens, Bachelor of Arts, BA
	3.	Ab - the eleventh month of the civil year; the fifth month of the ecclesiastical year in the Jewish calendar (in July and August) Synonyms: Av
	4.	ab - the muscles of the abdomen Synonyms: abdominal, abdominal muscle

Av, Hebrew calendar, Jewish calendar, Jewish calendar month