ab Meaning, Definition & Usage

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

WordNet

Ab noun
Etymology
Of Syriac origin.
Definitions
  1. The fifth month of the Jewish year according to the ecclesiastical reckoning, the eleventh by the civil computation, coinciding nearly with August. W. Smith.

Webster 1913