Ab

from WordNet (r) 3.0 (2006)

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

from The Collaborative International Dictionary of English v.0.48

Ab- \Ab-\ ([a^]b). [Latin prep., etymologically the same as E.
   of, off. See {Of}.]
   A prefix in many words of Latin origin. It signifies from,
   away, separating, or departure, as in abduct, abstract,
   abscond. See {A-}(6).
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Ab \Ab\ ([a^]b), n. [Of Syriac origin.]
   The fifth month of the Jewish year according to the
   ecclesiastical reckoning, the eleventh by the civil
   computation, coinciding nearly with August. --W. Smith.
   [1913 Webster]

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